<?xml version="1.0" encoding="UTF-8"?><feed xmlns="http://www.w3.org/2005/Atom"><title>Mixed States</title><link href="mixedstates.somethingsimilar.com/atom.xml" rel="self"/><id>mixedstates.somethingsimilar.com/atom.xml</id><updated>2006-12-04T10:20:42Z</updated><subtitle type="html"><![CDATA[The work and the lives of physicists.]]></subtitle><rights>All material copyright their owners.</rights><generator uri="http://mixed.somethingsimilar.com/" version="1.0-ish">Mixed</generator><entry><title type="html"><![CDATA[Marni Dee Sheppeard: The Dark Side]]></title><link href="http://kea-monad.blogspot.com/2008/03/dark-side.html"/><id>http://kea-monad.blogspot.com/2008/03/dark-side.html</id><updated>2008-03-15T03:30:01Z</updated><author><name>Marni Dee Sheppeard</name></author><summary type="html"><![CDATA[<a href=
'http://bp3.blogger.com/_j1PMRiUP1iY/R9tAb2grgtI/AAAAAAAAAZM/O06HzabRCWg/s1600-h/z20080308.jpg'
onblur=
'try {parent.deselectBloggerImageGracefully();} catch(e) {}'><img src='http://bp3.blogger.com/_j1PMRiUP1iY/R9tAb2grgtI/AAAAAAAAAZM/O06HzabRCWg/s320/z20080308.jpg'
border='0' id='BLOGGER_PHOTO_ID_5177803043825746642' alt='' style=
'float:left; margin:0 10px 10px 0;cursor:pointer; cursor:hand;'
name="BLOGGER_PHOTO_ID_5177803043825746642" /></a> I'm a bit behind
the times down here sometimes. I only just noticed, whilst passing
the news stand at the supermarket, that the cover story of the
<a href='http://www.newscientist.com/contents/issue/2646.html'>last
issue</a> of <span style='font-style:italic;'>New Scientist</span>
is about the possible non-existence of The Dark Force. I didn't
need to open it to know that it mentioned David Wiltshire, but of
course not <a href='http://riofriospacetime.blogspot.com/'>Louise
Riofrio</a>, <a href='http://matpitka.blogspot.com/'>Matti
Pitkanen</a> or a whole of host of other quantum gravity
researchers who think The Dark Force is absurd.]]></summary><content type="html" xml:base="http://kea-monad.blogspot.com/2008/03/dark-side.html"><![CDATA[<a href=
'http://bp3.blogger.com/_j1PMRiUP1iY/R9tAb2grgtI/AAAAAAAAAZM/O06HzabRCWg/s1600-h/z20080308.jpg'
onblur=
'try {parent.deselectBloggerImageGracefully();} catch(e) {}'><img src='http://bp3.blogger.com/_j1PMRiUP1iY/R9tAb2grgtI/AAAAAAAAAZM/O06HzabRCWg/s320/z20080308.jpg'
border='0' id='BLOGGER_PHOTO_ID_5177803043825746642' alt='' style=
'float:left; margin:0 10px 10px 0;cursor:pointer; cursor:hand;'
name="BLOGGER_PHOTO_ID_5177803043825746642" /></a> I'm a bit behind
the times down here sometimes. I only just noticed, whilst passing
the news stand at the supermarket, that the cover story of the
<a href='http://www.newscientist.com/contents/issue/2646.html'>last
issue</a> of <span style='font-style:italic;'>New Scientist</span>
is about the possible non-existence of The Dark Force. I didn't
need to open it to know that it mentioned David Wiltshire, but of
course not <a href='http://riofriospacetime.blogspot.com/'>Louise
Riofrio</a>, <a href='http://matpitka.blogspot.com/'>Matti
Pitkanen</a> or a whole of host of other quantum gravity
researchers who think The Dark Force is absurd.]]></content></entry><entry><title type="html"><![CDATA[Doug Natelson: March APS Meeting III]]></title><link href="http://nanoscale.blogspot.com/2008/03/march-meeting-iii.html"/><id>http://nanoscale.blogspot.com/2008/03/march-meeting-iii.html</id><updated>2008-03-15T02:29:58Z</updated><author><name>Doug Natelson</name></author><summary type="html"><![CDATA[<span style='font-size:85%;'><span style='font-family:verdana;'>Day
3 in New Orleans continued to be interesting, though I missed some
talks so that I could have conversations with a few people,
including my program officers from a couple of funding agencies.
It's never a bad idea to make sure that the program officers know
what you've been doing with their resources.<br />
<br />
I started out the day by catching an invited talk by <a href=
'http://www.physics.ucsb.edu/People/person.php3?userid=djs'>Doug
Scalapino</a> talking about his take on the binding "glue" in the
high-T<sub>c</sub> superconductors. Scalapino uses "glue" to refer
to the retarded (time-delayed) interaction that leads to pairing of
the electrons. In the low temperature superconductors, the glue in
this sense is the retarded phonon interaction - in a sense, one
electron leaves behind a lattice vibration that slightly deforms
the ion charge distribution, leading to a second electron of
opposite momentum to feel a slight residual attraction to the first
electron. The screened Coulomb interaction between the electrons is
effectively instantaneous (and repulsive). In the
high-T<sub>c</sub> case, it's not clear what the glue is. Scalapino
would argue that it's a spin fluctuation interaction; <a href=
'http://physics.princeton.edu/www/jh/pwa/'>Phil Anderson</a> would
probably argue that there is no important glue in this sense of the
term.<br />
<br />
I then chaired my session, which was fun but tiring. One
particularly cute experiment was from the <a href=
'http://www.nano.physik.uni-muenchen.de/nanomech/'>Weig/Kotthaus
group</a> at Munich. They are trying to use nanomechanical
resonators as charge shuttles. The idea is a bit like a bucket
brigade. Have a metal island be suspended on a resonant beam
between a source and a drain electrode. When set up ideally and
driven at resonance, the island will swing back and forth between
the source and drain like the clapper between the bells of an old
alarm clock. When the island gets close to the source, an electron
can tunnel onto the island. Ideally Coulomb blockade would ensure
that it's one and only one electron. Then the island can swing over
to the drain electrode, and drop off that electron. The experiment
was elegant - they make many resonators at once and wire them all
up in parallel. The clever bit is that they have each resonator
tailored with a <span style='font-style: italic;'>different</span>
mass, so that they can selectively drive just the one that they
want. They drive mechanically, by shaking the whole chip back and
forth, to avoid electrical crosstalk trouble. It should be very
nice when they can get the structures even smaller and colder, to
see strong Coulomb blockade effects.<br /></span></span>]]></summary><content type="html" xml:base="http://nanoscale.blogspot.com/2008/03/march-meeting-iii.html"><![CDATA[<span style='font-size:85%;'><span style='font-family:verdana;'>Day
3 in New Orleans continued to be interesting, though I missed some
talks so that I could have conversations with a few people,
including my program officers from a couple of funding agencies.
It's never a bad idea to make sure that the program officers know
what you've been doing with their resources.<br />
<br />
I started out the day by catching an invited talk by <a href=
'http://www.physics.ucsb.edu/People/person.php3?userid=djs'>Doug
Scalapino</a> talking about his take on the binding "glue" in the
high-T<sub>c</sub> superconductors. Scalapino uses "glue" to refer
to the retarded (time-delayed) interaction that leads to pairing of
the electrons. In the low temperature superconductors, the glue in
this sense is the retarded phonon interaction - in a sense, one
electron leaves behind a lattice vibration that slightly deforms
the ion charge distribution, leading to a second electron of
opposite momentum to feel a slight residual attraction to the first
electron. The screened Coulomb interaction between the electrons is
effectively instantaneous (and repulsive). In the
high-T<sub>c</sub> case, it's not clear what the glue is. Scalapino
would argue that it's a spin fluctuation interaction; <a href=
'http://physics.princeton.edu/www/jh/pwa/'>Phil Anderson</a> would
probably argue that there is no important glue in this sense of the
term.<br />
<br />
I then chaired my session, which was fun but tiring. One
particularly cute experiment was from the <a href=
'http://www.nano.physik.uni-muenchen.de/nanomech/'>Weig/Kotthaus
group</a> at Munich. They are trying to use nanomechanical
resonators as charge shuttles. The idea is a bit like a bucket
brigade. Have a metal island be suspended on a resonant beam
between a source and a drain electrode. When set up ideally and
driven at resonance, the island will swing back and forth between
the source and drain like the clapper between the bells of an old
alarm clock. When the island gets close to the source, an electron
can tunnel onto the island. Ideally Coulomb blockade would ensure
that it's one and only one electron. Then the island can swing over
to the drain electrode, and drop off that electron. The experiment
was elegant - they make many resonators at once and wire them all
up in parallel. The clever bit is that they have each resonator
tailored with a <span style='font-style: italic;'>different</span>
mass, so that they can selectively drive just the one that they
want. They drive mechanically, by shaking the whole chip back and
forth, to avoid electrical crosstalk trouble. It should be very
nice when they can get the structures even smaller and colder, to
see strong Coulomb blockade effects.<br /></span></span>]]></content></entry><entry><title type="html"><![CDATA[Doug Natelson: March APS Meeting wrapup]]></title><link href="http://nanoscale.blogspot.com/2008/03/march-aps-meeting-wrapup.html"/><id>http://nanoscale.blogspot.com/2008/03/march-aps-meeting-wrapup.html</id><updated>2008-03-15T02:29:33Z</updated><author><name>Doug Natelson</name></author><summary type="html"><![CDATA[<span style='font-size:85%;'><span style='font-family: verdana;'>I
returned yesterday evening from the March Meeting, and spent much
of today helping out with our graduate recruiting weekend for both
my department and the applied physics graduate program. Hence the
delayed blogging.<br />
<br />
My last day at the March Meeting was spent largely flitting from
session to session. I saw a very nice pair of talks by <a href=
'http://faculty.washington.edu/cobden/'>David Cobden</a> and one of
his students from Washington, showing measurements of the
metal-insulator transition in VO<sub>2</sub> nano-beams. Vanadium
dioxide is allegedly a Mott insulator in its low temperature state,
meaning that the on-site repulsion of the <span style=
'font-style: italic;'>d</span> orbitals of the vanadium is so
strong and the electronic population is just right so that the
whole correlated system is frozen. A bit above room temperature
(around 65 C) VO<sub>2</sub> becomes metallic, and there's been a
lot of interest in understanding the transition, which is
accompanied by a lattice distortion. In the new work, suspended
beams of the oxide are observed in an optical microscope while the
transition is examined. There is optical contrast between the two
phases, so one can determine how much of the beam is in each phase
in the coexistence region. Moreover, the elastic properties of the
beam allow them to infer much information about the phase diagram
for the transition, and offer some hints in conjunction with
conductance measurements that the metal/insulator transition may be
separate from the structural transition.<br />
<br />
After this, I went off to the session on charge and orbital
ordering to give my own talk about our <a href=
'http://nanoscale.blogspot.com/2007/12/magnetite.html'>magnetite
results</a>. Then I headed over to a session on molecular
electronics. Finally, I ended up over near a focus session on
nanotechnology, where there were a couple of nice talks on
fabrication methods.<br />
<br />
Overall, it was a good meeting - as good as these things usually
are. Most of the talks that I saw were pretty decent, and I had
some useful conversations with lots of colleagues. Only once or
twice did it occur to me that sessions could be more pleasant if
someone replaced the usual oven timer for pacing talks with either
a <a href='http://en.wikipedia.org/wiki/The_Gong_Show'>giant
gong</a> or perhaps one of those <a href=
'http://en.wikipedia.org/wiki/The_Hook_%28theater%29'>big hooks</a>
used to pull people off stage in bad vaudeville skits.<br />
<br /></span></span>]]></summary><content type="html" xml:base="http://nanoscale.blogspot.com/2008/03/march-aps-meeting-wrapup.html"><![CDATA[<span style='font-size:85%;'><span style='font-family: verdana;'>I
returned yesterday evening from the March Meeting, and spent much
of today helping out with our graduate recruiting weekend for both
my department and the applied physics graduate program. Hence the
delayed blogging.<br />
<br />
My last day at the March Meeting was spent largely flitting from
session to session. I saw a very nice pair of talks by <a href=
'http://faculty.washington.edu/cobden/'>David Cobden</a> and one of
his students from Washington, showing measurements of the
metal-insulator transition in VO<sub>2</sub> nano-beams. Vanadium
dioxide is allegedly a Mott insulator in its low temperature state,
meaning that the on-site repulsion of the <span style=
'font-style: italic;'>d</span> orbitals of the vanadium is so
strong and the electronic population is just right so that the
whole correlated system is frozen. A bit above room temperature
(around 65 C) VO<sub>2</sub> becomes metallic, and there's been a
lot of interest in understanding the transition, which is
accompanied by a lattice distortion. In the new work, suspended
beams of the oxide are observed in an optical microscope while the
transition is examined. There is optical contrast between the two
phases, so one can determine how much of the beam is in each phase
in the coexistence region. Moreover, the elastic properties of the
beam allow them to infer much information about the phase diagram
for the transition, and offer some hints in conjunction with
conductance measurements that the metal/insulator transition may be
separate from the structural transition.<br />
<br />
After this, I went off to the session on charge and orbital
ordering to give my own talk about our <a href=
'http://nanoscale.blogspot.com/2007/12/magnetite.html'>magnetite
results</a>. Then I headed over to a session on molecular
electronics. Finally, I ended up over near a focus session on
nanotechnology, where there were a couple of nice talks on
fabrication methods.<br />
<br />
Overall, it was a good meeting - as good as these things usually
are. Most of the talks that I saw were pretty decent, and I had
some useful conversations with lots of colleagues. Only once or
twice did it occur to me that sessions could be more pleasant if
someone replaced the usual oven timer for pacing talks with either
a <a href='http://en.wikipedia.org/wiki/The_Gong_Show'>giant
gong</a> or perhaps one of those <a href=
'http://en.wikipedia.org/wiki/The_Hook_%28theater%29'>big hooks</a>
used to pull people off stage in bad vaudeville skits.<br />
<br /></span></span>]]></content></entry><entry><title type="html"><![CDATA[Backreaction Group Blog: Historical Meme: Seven Things about Richard Carrington]]></title><link href="http://backreaction.blogspot.com/2008/03/historical-meme-seven-things-about.html"/><id>http://backreaction.blogspot.com/2008/03/historical-meme-seven-things-about.html</id><updated>2008-03-15T00:09:31Z</updated><author><name>Backreaction Group Blog</name></author><summary type="html"><![CDATA[<a href=
'http://dorigo.wordpress.com/2008/03/03/historical-meme-seven-facts-on-wladimiro-dorigo/'>
Tommaso Dorigo</a> has <a href=
'http://backreaction.blogspot.com/2008/03/cookies-palygorskite-and-maya-blue.html#c7878715643820646424'>
tagged us</a> with one of those <a href=
'http://dorigo.wordpress.com/2008/03/03/'>blog memes</a> - in this
case, a variant of the Historical Meme. The idea is to<br />
<br />
<ul>
<li><a href=
'http://dorigo.wordpress.com/2008/03/03/historical-meme-seven-facts-on-wladimiro-dorigo/'>
link to the person</a> who tagged you,</li>
<li>list seven random or weird things about your favourite
historical figure,</li>
<li>tag seven more people at the end of your blog and link to
theirs,</li>
<li>let the tagged people know by leaving a note on their
site.</li>
</ul>
<br />
<br />
In backreaction's editorial office, history-related stuff ends up
on my desk, so I'll try my best to keep the meme alive. Actually, I
do not have a favourite historical figure - there are just way too
many -, so I'll specify seven small facts about an interesting
historical figure I've just been reading about, <a href=
'http://www.hao.ucar.edu/Public/education/bios/carrington.html'>Richard
Carrington</a> (the <a href=
'http://en.wikipedia.org/wiki/Richard_Christopher_Carrington'>Wikipedia
entry</a> is still quite brief...)<br />
<br />
<ul>
<li style="list-style: none"><br /></li>
<li>Richard Carrington was born in 1826 in Chelsea, England. He
studied at Cambridge to become a cleric, but discovered his
fascination for astronomy</li>
<li style="list-style: none"><br /></li>
<li>His father, a wealthy brewer, agreed that he constructed his
own, private observatory at Redhill, Surrey. Working there,
Carrington established an accurate <a href=
'http://articles.adsabs.harvard.edu/full/1855MNRAS..16....2C'>Catalogue
of Stars of the Northern Sky</a>, which won him the Gold Medal of
the Royal Astronomical Society in 1859.<br />
<br />
<a href=
'http://soho.nascom.nasa.gov/gallery/images/large/spotcollage_prev.jpg'
onblur=
'try {parent.deselectBloggerImageGracefully();} catch(e) {}'><img src='http://soho.nascom.nasa.gov/gallery/images/large/spotcollage_prev.jpg'
border='0' alt='' style='display:block; width: 400px;' /></a><br />
<small>A series of large sunspots in March 2001 (Credit: <a href=
'http://soho.nascom.nasa.gov/gallery/images/spotcollage.html'>SOHO</a>)</small></li>
<li style="list-style: none"><br /></li>
<li>During daytime, he didn't rest, but embarked on a long-term
systematic study of <a href=
'http://en.wikipedia.org/wiki/Sunspot'>sunspots</a>. Analysing his
data, he <a href=
'http://adsabs.harvard.edu/full/1859MNRAS..19...81C'>discovered</a>
the <a href=
'http://en.wikipedia.org/wiki/Solar_rotation'>differential rotation
of the Sun</a>, implying that the Sun could not be a solid, rigid
body, as current wisdom stated at that time.<br />
<br />
<a href=
'http://antwrp.gsfc.nasa.gov/apod/image/0008/filament_trace_big.gif'
onblur=
'try {parent.deselectBloggerImageGracefully();} catch(e) {}'><img src='http://antwrp.gsfc.nasa.gov/apod/image/0008/filament_trace_big.gif'
border='0' alt='' style='display:block; width: 400px;' /></a><br />
<small>A Solar Filament Lifts Off (Credit: <a href=
'http://vestige.lmsal.com/TRACE/'>TRACE</a>, <a href=
'http://www.nasa.gov'>NASA</a>, via <a href=
'http://antwrp.gsfc.nasa.gov/apod/ap040725.html'>APOD, July 25,
2004</a>)</small></li>
<li style="list-style: none"><br /></li>
<li>While making his daily observations of sunspots, he became, on
September 1, 1859, the <a href=
'http://adsabs.harvard.edu/full/1859MNRAS..20...13C'>lucky
eyewitness</a> of one of the largest <a href=
'http://en.wikipedia.org/wiki/Solar_flare'>solar flares</a> in the
last few hundred years. A solar flare is a huge explosion in the
Sun's atmosphere, when turbulent magnetic fields slingshot large
amounts of ionised gas into interstellar space. When this plasma
hits the Earth's magnetic field, a few hours after the flare, the
result is a "<a href=
'http://en.wikipedia.org/wiki/Geomagnetic_storm'>Geomagnetic
Storm</a>", which can affect power grids, electronic equipment -
and causes splendid <a href=
'http://en.wikipedia.org/wiki/Aurora_%28astronomy%29'>auroras</a>.
In the wake of Carrington's flare, spectacular auroras could be
observed up to about ±30° latitude.<br />
<br />
<a href='http://en.wikipedia.org/wiki/Image:Polarlicht_2.jpg'
onblur=
'try {parent.deselectBloggerImageGracefully();} catch(e) {}'><img src='http://upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Polarlicht_2.jpg/800px-Polarlicht_2.jpg'
border='0' alt='' style='display:block; width: 400px;' /></a><br />
<small>The Aurora Borealis above Bear Lake, Alaska (Credit:
<a href='http://en.wikipedia.org/wiki/Image:Polarlicht_2.jpg'>Wikipedia</a>)</small></li>
<li style="list-style: none"><br /></li>
<li>Following the death of his father, he took care of the brewery.
He tried to keep on his solar observation program, and his
activities as a secretary for the Royal Astronomical Society. But
to his growing frustration, he had to note that he could not manage
both the brewery and his strict observational schedule at the same
time. He even sold his observatory.</li>
<li style="list-style: none"><br /></li>
<li>In the hope to be able to follow his fascination for astronomy
full-time again, he tried to get the positions of the director of
the university observatories of Cambridge and Oxford when they had
job openings, but without success. Finally, he brought himself to
sell the brewery, established a new private observatory and tried
to tie in with his earlier work, but with not much success.</li>
<li style="list-style: none"><br /></li>
<li>His wife was stabbed by a former lover, and had to take strong
medication in the aftermath. She died from an overdose of
sedatives. <a href=
'http://adsabs.harvard.edu/abs/1876MNRAS..36..137'>Carrington
died</a> ten days later, on November 27, 1875, officially of a
brain haemorrhage.</li>
</ul>
<br />
<br />
I've learned all these things from a very readable book with a
somewhat silly title, <i><a href=
'http://www.amazon.com/Sun-Kings-Unexpected-Carrington-Astronomy/dp/0691126607'>
The Sun Kings: The Unexpected Tragedy of Richard Carrington and the
Tale of How Modern Astronomy Began</a></i>, by Stuart Clark. It's
not only about Carrington, but about how during the 19th century,
the study of the Earth's magnetic field, the observation of
sunspots, and the developments of spectroscopy and atomic theory
started astrophysics and our understanding of the Sun and the stars
- here is a <a href=
'http://entertainment.timesonline.co.uk/tol/arts_and_entertainment/the_tls/article2731374.ece'>
review</a>.<br />
<br />
OK - Sabine was quite reluctant to propagate the meme, because it
may just annoy the affected bloggers who could feel compelled to
waste their time contributing something. So, I'll introduce a
mutation and transmit it to five blogs only instead of seven, and
allow for a crossing of the language barrier. Here are the tags:
<a href='http://decartes-einstein.blogspot.com/'>What is Einstein's
Moon?</a>, <a href='http://textundblog.de/'>Text&amp;Blog</a>,
<a href='http://scienceblogs.com/highlyallochthonous'>Highly
Allochthonous</a>, <a href='http://thegreenbelt.blogspot.com/'>The
Greenbelt</a>, and <a href=
'http://egregium.wordpress.com/'>Theorema Egregium</a>.<br />
<br />
<hr noshade='noshade' />
<br />
<br />
Update (March 14):<br />
Here is a brief genealogy of the meme, as reconstructed by the
links:<br />
<br />
<ul>
<li><a href=
'http://dorigo.wordpress.com/2008/03/03/historical-meme-seven-facts-on-wladimiro-dorigo/'>
A Quantum Diaries Survivor</a> (Tommaso Dorigo) on Wladimiro Dorigo
(March 3, 2008)</li>
<li><a href=
'http://timpanogos.wordpress.com/2008/03/01/tagged-by-myers-to-do-history-meet-james-madison/'>
Millard Fillmore’s Bathtub</a> (Ed Darrell) on James Madison (March
1, 2008)</li>
<li><a href=
'http://scienceblogs.com/pharyngula/2008/02/an_historical_meme.php'>
Pharyngula</a> (PZ Myers) on Karl Ernst Ritter von Baer, Edler von
Huthorn (February 25, 2008)</li>
<li><a href=
'http://scienceblogs.com/evolvingthoughts/2008/02/a_meme_a_medieval_meme.php'>
Evolving Thoughts</a> (John Wilkins) on Friedrich II von
Hohenstaufen (February 25, 2008)</li>
<li><a href=
'http://goblinpaladin.livejournal.com/132171.html'>Opinions of a
Reformed Dropout</a> on Isaac Newton (February 25, 2008)</li>
<li><a href=
'http://peromniasaecula.blogspot.com/2008/01/friday-meme-ification.html'>
Per Omnia Saecula</a> (Jennifer Lynn Jordan) on Prester John
(January 4, 2008)</li>
<li><a href=
'http://hefenfelth.wordpress.com/2007/12/30/history-meme-tag-oswald-of-northumbria/'>
Heavenfield</a> (Michelle of Heavenfield) on Oswald of Northumbria
(December 30, 2007)</li>
<li><a href=
'http://tenthmedieval.wordpress.com/2007/12/29/meme-tag-count-borrell-ii/'>
A Corner of Tenth-Century Europe</a> (Jonathan Jarrett) on Count
Borrell II (December 29, 2007)</li>
<li><a href=
'http://magistraetmater.blog.co.uk/2007/12/19/mutated_meme~3464911'>
Magistra et Mater</a> on Charlemagne/Karl der Große (December 19,
2007)</li>
</ul>
<br />
There is an essential mutation of the meme at Magistra et Mater,
changing "word 2" from "Share seve random and/or weird things
<i>about yourself</i>" to "<i>about a historical figure of your
choice</i>". So, I consider <a href=
'http://magistraetmater.blog.co.uk/2007/12/19/mutated_meme~3464911'>
that post the starting point</a> of this meme. The minor change
from "<i>of your choice</i>" to "<i>favourite</i>" happened already
at <a href=
'http://hefenfelth.wordpress.com/2007/12/30/history-meme-tag-oswald-of-northumbria/'>
Heavenfield</a>, who also gives a <a href=
'http://hefenfelth.wordpress.com/2008/01/13/history-meme-round-up/'>
partial account of the early path</a> of the meme.<br />
<br />
I have tagged The Greenbelt, who had in fact already been tagged
before - and, as it happens, together with Chris at Highly
Allochthonous - along this line:<br />
<ul>
<li><a href=
'http://thegreenbelt.blogspot.com/2008/02/historical-meme.html'>The
Greenbelt</a> on Ahhotep I (February 25, 2008)</li>
<li><a href=
'http://scienceblogs.com/authority/2008/02/historical_figure_meme_reading.php'>
The Questionable Authority</a> (Mike Dunford) on Nicolas Steno
(February 25, 2008)</li>
<li><a href=
'http://scienceblogs.com/evolvingthoughts/2008/02/a_meme_a_medieval_meme.php'>
Evolving Thoughts</a> (John Wilkins) on Friedrich II von
Hohenstaufen (February 25, 2008)</li>
</ul>
<br />
Nevertheless, The Greenbelt had a short <a href=
'http://en.wikipedia.org/wiki/Dead_time'>dead time</a> (my tribute
to <a href='http://www.talklikeaphysicist.com/'>Talk like a
Physicist Day</a>) and agreed to participate once more. So, until I
will have figured out how trackbacks work, here are links to the
meme's next generation so far:<br />
<ul>
<li><a href=
'http://decartes-einstein.blogspot.com/2008/03/historical-memethings-about-stephan.html'>
What is Einstein's Moon?</a> (Phil Warnell) on Stephen Gray</li>
<li><a href=
'http://thegreenbelt.blogspot.com/2008/03/historical-meme-redux.html'>
The Greenbelt</a> on Anton Pavlovich Chekhov</li>
</ul>
<br />
<br />
<hr noshade='noshade' />
<div class='blogger-post-footer'>"You do not really understand
something unless you can explain it to your grandmother." ~ Albert
Einstein</div>]]></summary><content type="html" xml:base="http://backreaction.blogspot.com/2008/03/historical-meme-seven-things-about.html"><![CDATA[<a href=
'http://dorigo.wordpress.com/2008/03/03/historical-meme-seven-facts-on-wladimiro-dorigo/'>
Tommaso Dorigo</a> has <a href=
'http://backreaction.blogspot.com/2008/03/cookies-palygorskite-and-maya-blue.html#c7878715643820646424'>
tagged us</a> with one of those <a href=
'http://dorigo.wordpress.com/2008/03/03/'>blog memes</a> - in this
case, a variant of the Historical Meme. The idea is to<br />
<br />
<ul>
<li><a href=
'http://dorigo.wordpress.com/2008/03/03/historical-meme-seven-facts-on-wladimiro-dorigo/'>
link to the person</a> who tagged you,</li>
<li>list seven random or weird things about your favourite
historical figure,</li>
<li>tag seven more people at the end of your blog and link to
theirs,</li>
<li>let the tagged people know by leaving a note on their
site.</li>
</ul>
<br />
<br />
In backreaction's editorial office, history-related stuff ends up
on my desk, so I'll try my best to keep the meme alive. Actually, I
do not have a favourite historical figure - there are just way too
many -, so I'll specify seven small facts about an interesting
historical figure I've just been reading about, <a href=
'http://www.hao.ucar.edu/Public/education/bios/carrington.html'>Richard
Carrington</a> (the <a href=
'http://en.wikipedia.org/wiki/Richard_Christopher_Carrington'>Wikipedia
entry</a> is still quite brief...)<br />
<br />
<ul>
<li style="list-style: none"><br /></li>
<li>Richard Carrington was born in 1826 in Chelsea, England. He
studied at Cambridge to become a cleric, but discovered his
fascination for astronomy</li>
<li style="list-style: none"><br /></li>
<li>His father, a wealthy brewer, agreed that he constructed his
own, private observatory at Redhill, Surrey. Working there,
Carrington established an accurate <a href=
'http://articles.adsabs.harvard.edu/full/1855MNRAS..16....2C'>Catalogue
of Stars of the Northern Sky</a>, which won him the Gold Medal of
the Royal Astronomical Society in 1859.<br />
<br />
<a href=
'http://soho.nascom.nasa.gov/gallery/images/large/spotcollage_prev.jpg'
onblur=
'try {parent.deselectBloggerImageGracefully();} catch(e) {}'><img src='http://soho.nascom.nasa.gov/gallery/images/large/spotcollage_prev.jpg'
border='0' alt='' style='display:block; width: 400px;' /></a><br />
<small>A series of large sunspots in March 2001 (Credit: <a href=
'http://soho.nascom.nasa.gov/gallery/images/spotcollage.html'>SOHO</a>)</small></li>
<li style="list-style: none"><br /></li>
<li>During daytime, he didn't rest, but embarked on a long-term
systematic study of <a href=
'http://en.wikipedia.org/wiki/Sunspot'>sunspots</a>. Analysing his
data, he <a href=
'http://adsabs.harvard.edu/full/1859MNRAS..19...81C'>discovered</a>
the <a href=
'http://en.wikipedia.org/wiki/Solar_rotation'>differential rotation
of the Sun</a>, implying that the Sun could not be a solid, rigid
body, as current wisdom stated at that time.<br />
<br />
<a href=
'http://antwrp.gsfc.nasa.gov/apod/image/0008/filament_trace_big.gif'
onblur=
'try {parent.deselectBloggerImageGracefully();} catch(e) {}'><img src='http://antwrp.gsfc.nasa.gov/apod/image/0008/filament_trace_big.gif'
border='0' alt='' style='display:block; width: 400px;' /></a><br />
<small>A Solar Filament Lifts Off (Credit: <a href=
'http://vestige.lmsal.com/TRACE/'>TRACE</a>, <a href=
'http://www.nasa.gov'>NASA</a>, via <a href=
'http://antwrp.gsfc.nasa.gov/apod/ap040725.html'>APOD, July 25,
2004</a>)</small></li>
<li style="list-style: none"><br /></li>
<li>While making his daily observations of sunspots, he became, on
September 1, 1859, the <a href=
'http://adsabs.harvard.edu/full/1859MNRAS..20...13C'>lucky
eyewitness</a> of one of the largest <a href=
'http://en.wikipedia.org/wiki/Solar_flare'>solar flares</a> in the
last few hundred years. A solar flare is a huge explosion in the
Sun's atmosphere, when turbulent magnetic fields slingshot large
amounts of ionised gas into interstellar space. When this plasma
hits the Earth's magnetic field, a few hours after the flare, the
result is a "<a href=
'http://en.wikipedia.org/wiki/Geomagnetic_storm'>Geomagnetic
Storm</a>", which can affect power grids, electronic equipment -
and causes splendid <a href=
'http://en.wikipedia.org/wiki/Aurora_%28astronomy%29'>auroras</a>.
In the wake of Carrington's flare, spectacular auroras could be
observed up to about ±30° latitude.<br />
<br />
<a href='http://en.wikipedia.org/wiki/Image:Polarlicht_2.jpg'
onblur=
'try {parent.deselectBloggerImageGracefully();} catch(e) {}'><img src='http://upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Polarlicht_2.jpg/800px-Polarlicht_2.jpg'
border='0' alt='' style='display:block; width: 400px;' /></a><br />
<small>The Aurora Borealis above Bear Lake, Alaska (Credit:
<a href='http://en.wikipedia.org/wiki/Image:Polarlicht_2.jpg'>Wikipedia</a>)</small></li>
<li style="list-style: none"><br /></li>
<li>Following the death of his father, he took care of the brewery.
He tried to keep on his solar observation program, and his
activities as a secretary for the Royal Astronomical Society. But
to his growing frustration, he had to note that he could not manage
both the brewery and his strict observational schedule at the same
time. He even sold his observatory.</li>
<li style="list-style: none"><br /></li>
<li>In the hope to be able to follow his fascination for astronomy
full-time again, he tried to get the positions of the director of
the university observatories of Cambridge and Oxford when they had
job openings, but without success. Finally, he brought himself to
sell the brewery, established a new private observatory and tried
to tie in with his earlier work, but with not much success.</li>
<li style="list-style: none"><br /></li>
<li>His wife was stabbed by a former lover, and had to take strong
medication in the aftermath. She died from an overdose of
sedatives. <a href=
'http://adsabs.harvard.edu/abs/1876MNRAS..36..137'>Carrington
died</a> ten days later, on November 27, 1875, officially of a
brain haemorrhage.</li>
</ul>
<br />
<br />
I've learned all these things from a very readable book with a
somewhat silly title, <i><a href=
'http://www.amazon.com/Sun-Kings-Unexpected-Carrington-Astronomy/dp/0691126607'>
The Sun Kings: The Unexpected Tragedy of Richard Carrington and the
Tale of How Modern Astronomy Began</a></i>, by Stuart Clark. It's
not only about Carrington, but about how during the 19th century,
the study of the Earth's magnetic field, the observation of
sunspots, and the developments of spectroscopy and atomic theory
started astrophysics and our understanding of the Sun and the stars
- here is a <a href=
'http://entertainment.timesonline.co.uk/tol/arts_and_entertainment/the_tls/article2731374.ece'>
review</a>.<br />
<br />
OK - Sabine was quite reluctant to propagate the meme, because it
may just annoy the affected bloggers who could feel compelled to
waste their time contributing something. So, I'll introduce a
mutation and transmit it to five blogs only instead of seven, and
allow for a crossing of the language barrier. Here are the tags:
<a href='http://decartes-einstein.blogspot.com/'>What is Einstein's
Moon?</a>, <a href='http://textundblog.de/'>Text&amp;Blog</a>,
<a href='http://scienceblogs.com/highlyallochthonous'>Highly
Allochthonous</a>, <a href='http://thegreenbelt.blogspot.com/'>The
Greenbelt</a>, and <a href=
'http://egregium.wordpress.com/'>Theorema Egregium</a>.<br />
<br />
<hr noshade='noshade' />
<br />
<br />
Update (March 14):<br />
Here is a brief genealogy of the meme, as reconstructed by the
links:<br />
<br />
<ul>
<li><a href=
'http://dorigo.wordpress.com/2008/03/03/historical-meme-seven-facts-on-wladimiro-dorigo/'>
A Quantum Diaries Survivor</a> (Tommaso Dorigo) on Wladimiro Dorigo
(March 3, 2008)</li>
<li><a href=
'http://timpanogos.wordpress.com/2008/03/01/tagged-by-myers-to-do-history-meet-james-madison/'>
Millard Fillmore’s Bathtub</a> (Ed Darrell) on James Madison (March
1, 2008)</li>
<li><a href=
'http://scienceblogs.com/pharyngula/2008/02/an_historical_meme.php'>
Pharyngula</a> (PZ Myers) on Karl Ernst Ritter von Baer, Edler von
Huthorn (February 25, 2008)</li>
<li><a href=
'http://scienceblogs.com/evolvingthoughts/2008/02/a_meme_a_medieval_meme.php'>
Evolving Thoughts</a> (John Wilkins) on Friedrich II von
Hohenstaufen (February 25, 2008)</li>
<li><a href=
'http://goblinpaladin.livejournal.com/132171.html'>Opinions of a
Reformed Dropout</a> on Isaac Newton (February 25, 2008)</li>
<li><a href=
'http://peromniasaecula.blogspot.com/2008/01/friday-meme-ification.html'>
Per Omnia Saecula</a> (Jennifer Lynn Jordan) on Prester John
(January 4, 2008)</li>
<li><a href=
'http://hefenfelth.wordpress.com/2007/12/30/history-meme-tag-oswald-of-northumbria/'>
Heavenfield</a> (Michelle of Heavenfield) on Oswald of Northumbria
(December 30, 2007)</li>
<li><a href=
'http://tenthmedieval.wordpress.com/2007/12/29/meme-tag-count-borrell-ii/'>
A Corner of Tenth-Century Europe</a> (Jonathan Jarrett) on Count
Borrell II (December 29, 2007)</li>
<li><a href=
'http://magistraetmater.blog.co.uk/2007/12/19/mutated_meme~3464911'>
Magistra et Mater</a> on Charlemagne/Karl der Große (December 19,
2007)</li>
</ul>
<br />
There is an essential mutation of the meme at Magistra et Mater,
changing "word 2" from "Share seve random and/or weird things
<i>about yourself</i>" to "<i>about a historical figure of your
choice</i>". So, I consider <a href=
'http://magistraetmater.blog.co.uk/2007/12/19/mutated_meme~3464911'>
that post the starting point</a> of this meme. The minor change
from "<i>of your choice</i>" to "<i>favourite</i>" happened already
at <a href=
'http://hefenfelth.wordpress.com/2007/12/30/history-meme-tag-oswald-of-northumbria/'>
Heavenfield</a>, who also gives a <a href=
'http://hefenfelth.wordpress.com/2008/01/13/history-meme-round-up/'>
partial account of the early path</a> of the meme.<br />
<br />
I have tagged The Greenbelt, who had in fact already been tagged
before - and, as it happens, together with Chris at Highly
Allochthonous - along this line:<br />
<ul>
<li><a href=
'http://thegreenbelt.blogspot.com/2008/02/historical-meme.html'>The
Greenbelt</a> on Ahhotep I (February 25, 2008)</li>
<li><a href=
'http://scienceblogs.com/authority/2008/02/historical_figure_meme_reading.php'>
The Questionable Authority</a> (Mike Dunford) on Nicolas Steno
(February 25, 2008)</li>
<li><a href=
'http://scienceblogs.com/evolvingthoughts/2008/02/a_meme_a_medieval_meme.php'>
Evolving Thoughts</a> (John Wilkins) on Friedrich II von
Hohenstaufen (February 25, 2008)</li>
</ul>
<br />
Nevertheless, The Greenbelt had a short <a href=
'http://en.wikipedia.org/wiki/Dead_time'>dead time</a> (my tribute
to <a href='http://www.talklikeaphysicist.com/'>Talk like a
Physicist Day</a>) and agreed to participate once more. So, until I
will have figured out how trackbacks work, here are links to the
meme's next generation so far:<br />
<ul>
<li><a href=
'http://decartes-einstein.blogspot.com/2008/03/historical-memethings-about-stephan.html'>
What is Einstein's Moon?</a> (Phil Warnell) on Stephen Gray</li>
<li><a href=
'http://thegreenbelt.blogspot.com/2008/03/historical-meme-redux.html'>
The Greenbelt</a> on Anton Pavlovich Chekhov</li>
</ul>
<br />
<br />
<hr noshade='noshade' />
<div class='blogger-post-footer'>"You do not really understand
something unless you can explain it to your grandmother." ~ Albert
Einstein</div>]]></content></entry><entry><title type="html"><![CDATA[Peter Steinberg: Movie Physics Report Card]]></title><link href="http://entropybound.blogspot.com/2008/03/movie-physics-report-card.html"/><id>http://entropybound.blogspot.com/2008/03/movie-physics-report-card.html</id><updated>2008-03-14T23:37:26Z</updated><author><name>Peter Steinberg</name></author><summary type="html"><![CDATA[Who can resist this (IO9 via Boing Boing)?<br />
<a href='http://io9.com/assets/resources/2008/03/badmovsci2.gif'
onblur=
'try {parent.deselectBloggerImageGracefully();} catch(e) {}'><img src='http://io9.com/assets/resources/2008/03/badmovsci2.gif'
border='0' alt='' style=
'margin: 0px auto 10px; display: block; text-align: center; cursor: pointer; width: 400px;' />
</a>]]></summary><content type="html" xml:base="http://entropybound.blogspot.com/2008/03/movie-physics-report-card.html"><![CDATA[Who can resist this (IO9 via Boing Boing)?<br />
<a href='http://io9.com/assets/resources/2008/03/badmovsci2.gif'
onblur=
'try {parent.deselectBloggerImageGracefully();} catch(e) {}'><img src='http://io9.com/assets/resources/2008/03/badmovsci2.gif'
border='0' alt='' style=
'margin: 0px auto 10px; display: block; text-align: center; cursor: pointer; width: 400px;' />
</a>]]></content></entry><entry><title type="html"><![CDATA[Cosma Shalizi: Profiled]]></title><link href="http://bactra.org/weblog/564.html"/><id>http://bactra.org/weblog/564.html</id><updated>2008-03-14T20:38:06Z</updated><author><name>Cosma Shalizi</name></author><summary type="html"><![CDATA[<p>I am this week's <a href=
"http://normblog.typepad.com/normblog/2008/03/the-normblog--1.html">
profilee</a> at <a href=
"http://normblog.typepad.com/normblog/">Norman Geras's blog</a>.
This is very pleasing to me, as my chance discovery of Norm's
<cite><a href=
"http://www.powells.com/partner/27627/biblio/9780860916598">Solidarity
in the Conversation of Human Kind</a></cite> (followed by his
<cite><a href=
"http://www.powells.com/partner/27627/biblio/9780860910664">Marx
and Human Nature</a></cite>) was an important part of my
intellectual development in graduate school. There are some very
important areas of politics where I believe that he is <em>very
wrong</em>, but he's always <a href=
"http://www.marxists.org/reference/subject/philosophy/works/us/geras1.htm">
sincerely benevolent</a> and worth reading; and sometimes, <a href=
"http://normblog.typepad.com/normblog/2008/03/moral-obligatio.html">
simply right</a>.</p>
<p><span class="blognotes"><a href=
"http://bactra.org/weblog/cat_selfcentered.html">Self-Centered</a>;
<a href=
"http://bactra.org/weblog/cat_the_progressive_forces.html">The
Progressive Forces</a>; <a href=
"http://bactra.org/weblog/cat_linkage.html">Linkage</a></span></p>]]></summary><content type="html" xml:base="http://bactra.org/weblog/564.html"><![CDATA[<p>I am this week's <a href=
"http://normblog.typepad.com/normblog/2008/03/the-normblog--1.html">
profilee</a> at <a href=
"http://normblog.typepad.com/normblog/">Norman Geras's blog</a>.
This is very pleasing to me, as my chance discovery of Norm's
<cite><a href=
"http://www.powells.com/partner/27627/biblio/9780860916598">Solidarity
in the Conversation of Human Kind</a></cite> (followed by his
<cite><a href=
"http://www.powells.com/partner/27627/biblio/9780860910664">Marx
and Human Nature</a></cite>) was an important part of my
intellectual development in graduate school. There are some very
important areas of politics where I believe that he is <em>very
wrong</em>, but he's always <a href=
"http://www.marxists.org/reference/subject/philosophy/works/us/geras1.htm">
sincerely benevolent</a> and worth reading; and sometimes, <a href=
"http://normblog.typepad.com/normblog/2008/03/moral-obligatio.html">
simply right</a>.</p>
<p><span class="blognotes"><a href=
"http://bactra.org/weblog/cat_selfcentered.html">Self-Centered</a>;
<a href=
"http://bactra.org/weblog/cat_the_progressive_forces.html">The
Progressive Forces</a>; <a href=
"http://bactra.org/weblog/cat_linkage.html">Linkage</a></span></p>]]></content></entry><entry><title type="html"><![CDATA[Luboš Motl: Paris]]></title><link href="http://motls.blogspot.com/2008/03/paris.html"/><id>http://motls.blogspot.com/2008/03/paris.html</id><updated>2008-03-14T19:23:51Z</updated><author><name>Lubo&#353; Motl</name></author><summary type="html"><![CDATA[Hi! Greetings from Paris. Sorry for the moderation. I approved
virtually all comments waiting in the line. The hosts are extremely
hospitable and everyone is double-kissing everyone here in Paris
which is fascinating. I can't write too much more here because
Apple is simply a significant difficulty for me. I will be back on
Monday evening.]]></summary><content type="html" xml:base="http://motls.blogspot.com/2008/03/paris.html"><![CDATA[Hi! Greetings from Paris. Sorry for the moderation. I approved
virtually all comments waiting in the line. The hosts are extremely
hospitable and everyone is double-kissing everyone here in Paris
which is fascinating. I can't write too much more here because
Apple is simply a significant difficulty for me. I will be back on
Monday evening.]]></content></entry><entry><title type="html"><![CDATA[Peter Steinberg: Talk Like A Physicist Day, but not on Wikipedia]]></title><link href="http://entropybound.blogspot.com/2008/03/talk-like-physicist-day-but-not-on.html"/><id>http://entropybound.blogspot.com/2008/03/talk-like-physicist-day-but-not-on.html</id><updated>2008-03-14T18:20:41Z</updated><author><name>Peter Steinberg</name></author><summary type="html"><![CDATA[A little late, but all us physbloggers are duty bound to talk up
"<a href='http://www.talklikeaphysicist.com/'>Talk Like A Physicist
Day</a>", held today on "Pi" 2008 (i.e. 3/14/2008). While I feel
like I talk like a physicist every day (or every once in a while on
this blog), maybe I could consider a few of their
suggestions:<br />
<blockquote>Don’t say that “you are going to brush your teeth”;
instead “I am going to apply the force of friction to overcome the
electrical bonds between my teeth and foreign matter.”</blockquote>
<div>Ahem, my wife won't appreciate that one.</div>
<div>That said, I hadn't realized how restrictive it is to speak
about one's own work, once submitted to a prestigious journal. As
New Scientist reports (via Slashdot):<br />
<blockquote>Scientists who want to describe their work on Wikipedia
should not be forced to give up the kudos of a respected journal.
So says a group of physicist who are going head-to-head with a
publisher because it will not allow them to post parts of their
work to the online encylopaedia, blogs and other forums.
<p>The physicists were upset after the American Physical Society
withdrew its offer to publish two studies in Physical Review
Letters because the authors had asked for a rights agreement
compatible with Wikipedia . The APS asks ascientists to trasnfer
their copyright to the sccoiety before they can publish in an APS
journal. This prevents scientists contributing illustrations or
other "derivative works" of their papers to many websites without
explicit permission.</p>
</blockquote>
So, for now, feel free to talk like a physicst, but just not on
Wikipedia. Let's see what happens in May.<br /></div>]]></summary><content type="html" xml:base="http://entropybound.blogspot.com/2008/03/talk-like-physicist-day-but-not-on.html"><![CDATA[A little late, but all us physbloggers are duty bound to talk up
"<a href='http://www.talklikeaphysicist.com/'>Talk Like A Physicist
Day</a>", held today on "Pi" 2008 (i.e. 3/14/2008). While I feel
like I talk like a physicist every day (or every once in a while on
this blog), maybe I could consider a few of their
suggestions:<br />
<blockquote>Don’t say that “you are going to brush your teeth”;
instead “I am going to apply the force of friction to overcome the
electrical bonds between my teeth and foreign matter.”</blockquote>
<div>Ahem, my wife won't appreciate that one.</div>
<div>That said, I hadn't realized how restrictive it is to speak
about one's own work, once submitted to a prestigious journal. As
New Scientist reports (via Slashdot):<br />
<blockquote>Scientists who want to describe their work on Wikipedia
should not be forced to give up the kudos of a respected journal.
So says a group of physicist who are going head-to-head with a
publisher because it will not allow them to post parts of their
work to the online encylopaedia, blogs and other forums.
<p>The physicists were upset after the American Physical Society
withdrew its offer to publish two studies in Physical Review
Letters because the authors had asked for a rights agreement
compatible with Wikipedia . The APS asks ascientists to trasnfer
their copyright to the sccoiety before they can publish in an APS
journal. This prevents scientists contributing illustrations or
other "derivative works" of their papers to many websites without
explicit permission.</p>
</blockquote>
So, for now, feel free to talk like a physicst, but just not on
Wikipedia. Let's see what happens in May.<br /></div>]]></content></entry><entry><title type="html"><![CDATA[Chad Orzel: FutureBaby Playlist: O-S]]></title><link href="http://feeds.feedburner.com/~r/scienceblogs/uncertainprinciples/~3/251492867/futurebaby_playlist_os.php"/><id>http://feeds.feedburner.com/~r/scienceblogs/uncertainprinciples/~3/251492867/futurebaby_playlist_os.php</id><updated>2008-03-14T17:17:53Z</updated><author><name>Chad Orzel</name></author><summary type="html"><![CDATA[<p>You know, there are really a remarkable number of bands whose
names begin with "S"... There may be more "B" or "T" acts in my
library, just because I own a bazillion songs by Bob Dylan and Tom
Waits, but there sure are a lot of "S" artists.</p>
<p>This set continues to show that sing-along-ability is the most
important criterion in picking FutureBaby tunes. On strict moral
grounds, the Pogues have no business on such a list, not due to
lyrical content, but rather the make-up of the band, but how could
I not include a couple of theirs?</p>
<a href=
"http://scienceblogs.com/principles/2008/03/futurebaby_playlist_os.php">Read
the rest of this post...</a> | <a href=
"http://scienceblogs.com/principles/2008/03/futurebaby_playlist_os.php#commentsArea">
Read the comments on this post...</a><img src=
"http://feeds.feedburner.com/~r/scienceblogs/uncertainprinciples/~4/251492867"
height="1" width="1" />]]></summary><content type="html" xml:base="http://feeds.feedburner.com/~r/scienceblogs/uncertainprinciples/~3/251492867/futurebaby_playlist_os.php"><![CDATA[<p>You know, there are really a remarkable number of bands whose
names begin with "S"... There may be more "B" or "T" acts in my
library, just because I own a bazillion songs by Bob Dylan and Tom
Waits, but there sure are a lot of "S" artists.</p>
<p>This set continues to show that sing-along-ability is the most
important criterion in picking FutureBaby tunes. On strict moral
grounds, the Pogues have no business on such a list, not due to
lyrical content, but rather the make-up of the band, but how could
I not include a couple of theirs?</p>
<a href=
"http://scienceblogs.com/principles/2008/03/futurebaby_playlist_os.php">Read
the rest of this post...</a> | <a href=
"http://scienceblogs.com/principles/2008/03/futurebaby_playlist_os.php#commentsArea">
Read the comments on this post...</a><img src=
"http://feeds.feedburner.com/~r/scienceblogs/uncertainprinciples/~4/251492867"
height="1" width="1" />]]></content></entry><entry><title type="html"><![CDATA[Backreaction Group Blog: PI day Captcha]]></title><link href="http://backreaction.blogspot.com/2008/03/pi-day-captcha.html"/><id>http://backreaction.blogspot.com/2008/03/pi-day-captcha.html</id><updated>2008-03-14T17:06:20Z</updated><author><name>Backreaction Group Blog</name></author><summary type="html"><![CDATA[<center><br />
<a href='http://random.irb.hr/signup.php'><img src=
'http://th.physik.uni-frankfurt.de/~scherer/Blogging/Pi-day/captcha_small.jpg'
border='0' /></a></center>
<br />
<!-- <a href="http://random.irb.hr/signup.php"><img src="http://www.uni-frankfurt.de/~scherers/blogging/PIDay/captcha_small.jpg" border="0"></a> --><br />

<small>From <a href='http://random.irb.hr/signup.php'>Quantum
Random Bit Generator Service</a> via <a href=
'http://www.scienceblogs.de/mathlog/2008/03/captcha.php'>mathlog</a>
and <a href=
'http://www.wiskundemeisjes.nl/20080309/captcha/'>wiskundemeisjes</a></small>.<br />

<br />
<hr noshade='noshade' />
<br />
<a href='http://en.wikipedia.org/wiki/Captcha'>Captcha</a>:
"Completely Automated Public Turing test to tell Computers and
Humans Apart".<br />
<br />
<a href='http://backreaction.blogspot.com/2007/03/pi-day.html'>PI
Day</a>, recycled.<br />
<br />
<div class='blogger-post-footer'>"You do not really understand
something unless you can explain it to your grandmother." ~ Albert
Einstein</div>]]></summary><content type="html" xml:base="http://backreaction.blogspot.com/2008/03/pi-day-captcha.html"><![CDATA[<center><br />
<a href='http://random.irb.hr/signup.php'><img src=
'http://th.physik.uni-frankfurt.de/~scherer/Blogging/Pi-day/captcha_small.jpg'
border='0' /></a></center>
<br />
<!-- <a href="http://random.irb.hr/signup.php"><img src="http://www.uni-frankfurt.de/~scherers/blogging/PIDay/captcha_small.jpg" border="0"></a> --><br />

<small>From <a href='http://random.irb.hr/signup.php'>Quantum
Random Bit Generator Service</a> via <a href=
'http://www.scienceblogs.de/mathlog/2008/03/captcha.php'>mathlog</a>
and <a href=
'http://www.wiskundemeisjes.nl/20080309/captcha/'>wiskundemeisjes</a></small>.<br />

<br />
<hr noshade='noshade' />
<br />
<a href='http://en.wikipedia.org/wiki/Captcha'>Captcha</a>:
"Completely Automated Public Turing test to tell Computers and
Humans Apart".<br />
<br />
<a href='http://backreaction.blogspot.com/2007/03/pi-day.html'>PI
Day</a>, recycled.<br />
<br />
<div class='blogger-post-footer'>"You do not really understand
something unless you can explain it to your grandmother." ~ Albert
Einstein</div>]]></content></entry><entry><title type="html"><![CDATA[Chad Orzel: Lab Visit Report: Four-Wave Mixing]]></title><link href="http://feeds.feedburner.com/~r/scienceblogs/uncertainprinciples/~3/251445209/lab_visit_report_fourwave_mixi.php"/><id>http://feeds.feedburner.com/~r/scienceblogs/uncertainprinciples/~3/251445209/lab_visit_report_fourwave_mixi.php</id><updated>2008-03-14T15:54:43Z</updated><author><name>Chad Orzel</name></author><summary type="html"><![CDATA[<p><a href="http://www.researchblogging.org"><img alt=
"ResearchBlogging.org" class="inset" src=
"http://www.researchblogging.org/images/rbicons/ResearchBlogging-Medium-White.png"
width="80" height="50" /></a>The next lab visit experiments I want
to talk about are really the epitome of what I called the "NIST
Paradigm" in <a href=
"http://scienceblogs.com/principles/2008/03/lab_visit_report_cold_plasmas.php">
an earlier post</a>. These are experiments on "four-wave mixing"
done by Colin McCormick (who I TA'd in freshman physics, back in
the day), a post-doc in Paul Lett's lab at NIST. As Paul said when
I visited, if they had had a better idea of the field they were
dabbling in, they would've thought that what they were trying was
impossible; thanks to their relative ignorance, though, they just
plowed ahead, and accomplished something pretty impressive.</p>
<p>The basic scheme is laid out in <a href=
"http://arxiv.org/abs/physics/0607254">this arXiv preprint</a>,
which appears to be the same as <a href=
"http://ol.osa.org/abstract.cfm?id=119985">this <cite>Optics
Letter</cite></a> (I don't have electronic access to Optics
Letters, so I'm working off the arXiv text), and looks like
this:</p>
<p><img alt="4wm.jpg" src=
"http://scienceblogs.com/principles/4wm.jpg" width="500" height=
"509" /></p>
<p>Clears everything right up, doesn't it? Well, OK, maybe I can
explain a little more...</p>
<a href=
"http://scienceblogs.com/principles/2008/03/lab_visit_report_fourwave_mixi.php">Read
the rest of this post...</a> | <a href=
"http://scienceblogs.com/principles/2008/03/lab_visit_report_fourwave_mixi.php#commentsArea">
Read the comments on this post...</a><img src=
"http://feeds.feedburner.com/~r/scienceblogs/uncertainprinciples/~4/251445209"
height="1" width="1" />]]></summary><content type="html" xml:base="http://feeds.feedburner.com/~r/scienceblogs/uncertainprinciples/~3/251445209/lab_visit_report_fourwave_mixi.php"><![CDATA[<p><a href="http://www.researchblogging.org"><img alt=
"ResearchBlogging.org" class="inset" src=
"http://www.researchblogging.org/images/rbicons/ResearchBlogging-Medium-White.png"
width="80" height="50" /></a>The next lab visit experiments I want
to talk about are really the epitome of what I called the "NIST
Paradigm" in <a href=
"http://scienceblogs.com/principles/2008/03/lab_visit_report_cold_plasmas.php">
an earlier post</a>. These are experiments on "four-wave mixing"
done by Colin McCormick (who I TA'd in freshman physics, back in
the day), a post-doc in Paul Lett's lab at NIST. As Paul said when
I visited, if they had had a better idea of the field they were
dabbling in, they would've thought that what they were trying was
impossible; thanks to their relative ignorance, though, they just
plowed ahead, and accomplished something pretty impressive.</p>
<p>The basic scheme is laid out in <a href=
"http://arxiv.org/abs/physics/0607254">this arXiv preprint</a>,
which appears to be the same as <a href=
"http://ol.osa.org/abstract.cfm?id=119985">this <cite>Optics
Letter</cite></a> (I don't have electronic access to Optics
Letters, so I'm working off the arXiv text), and looks like
this:</p>
<p><img alt="4wm.jpg" src=
"http://scienceblogs.com/principles/4wm.jpg" width="500" height=
"509" /></p>
<p>Clears everything right up, doesn't it? Well, OK, maybe I can
explain a little more...</p>
<a href=
"http://scienceblogs.com/principles/2008/03/lab_visit_report_fourwave_mixi.php">Read
the rest of this post...</a> | <a href=
"http://scienceblogs.com/principles/2008/03/lab_visit_report_fourwave_mixi.php#commentsArea">
Read the comments on this post...</a><img src=
"http://feeds.feedburner.com/~r/scienceblogs/uncertainprinciples/~4/251445209"
height="1" width="1" />]]></content></entry><entry><title type="html"><![CDATA[Chad Orzel: Nice Beaver!]]></title><link href="http://feeds.feedburner.com/~r/scienceblogs/uncertainprinciples/~3/251397411/nice_beaver.php"/><id>http://feeds.feedburner.com/~r/scienceblogs/uncertainprinciples/~3/251397411/nice_beaver.php</id><updated>2008-03-14T14:11:00Z</updated><author><name>Chad Orzel</name></author><summary type="html"><![CDATA[<p><img alt="sm_beaver_beg.jpg" src=
"http://scienceblogs.com/principles/sm_beaver_beg.jpg" width="500"
height="377" /></p>
<p>Yet another picture taken by Kate at the National Zoo. When we
arrived at the beaver pen, a bunch of keepers were inside, posing
for a picture. This little guy clearly thought that humans being in
his enclosure indicated that it was feeding time, and was doing his
best pathetic begging.</p>
<p>It really just begs to be LOL'ed:</p>
<a href=
"http://scienceblogs.com/principles/2008/03/nice_beaver.php">Read
the rest of this post...</a> | <a href=
"http://scienceblogs.com/principles/2008/03/nice_beaver.php#commentsArea">
Read the comments on this post...</a><img src=
"http://feeds.feedburner.com/~r/scienceblogs/uncertainprinciples/~4/251397411"
height="1" width="1" />]]></summary><content type="html" xml:base="http://feeds.feedburner.com/~r/scienceblogs/uncertainprinciples/~3/251397411/nice_beaver.php"><![CDATA[<p><img alt="sm_beaver_beg.jpg" src=
"http://scienceblogs.com/principles/sm_beaver_beg.jpg" width="500"
height="377" /></p>
<p>Yet another picture taken by Kate at the National Zoo. When we
arrived at the beaver pen, a bunch of keepers were inside, posing
for a picture. This little guy clearly thought that humans being in
his enclosure indicated that it was feeding time, and was doing his
best pathetic begging.</p>
<p>It really just begs to be LOL'ed:</p>
<a href=
"http://scienceblogs.com/principles/2008/03/nice_beaver.php">Read
the rest of this post...</a> | <a href=
"http://scienceblogs.com/principles/2008/03/nice_beaver.php#commentsArea">
Read the comments on this post...</a><img src=
"http://feeds.feedburner.com/~r/scienceblogs/uncertainprinciples/~4/251397411"
height="1" width="1" />]]></content></entry><entry><title type="html"><![CDATA[Chad Orzel: Talk Like a Physicist]]></title><link href="http://feeds.feedburner.com/~r/scienceblogs/uncertainprinciples/~3/251346240/talk_like_a_physicist.php"/><id>http://feeds.feedburner.com/~r/scienceblogs/uncertainprinciples/~3/251346240/talk_like_a_physicist.php</id><updated>2008-03-14T12:23:53Z</updated><author><name>Chad Orzel</name></author><summary type="html"><![CDATA[<p>Today ha been dubbed <a href=
"http://talklikeaphysicist.com/">"Talk Like a Physicist Day"</a>.
Why? Because we're at least as cool as pirates, that's why.</p>
<p>Over at Swans on Tea, Tom <a href=
"http://blogs.scienceforums.net/swansont/archives/114">offers some
vocabulary tips</a>:</p>
<blockquote>
<p>Use "canonical" when you mean "usual" or "standard." As in, "the
canonical example of talking like a physicist is to use the word
'canonical.'"</p>
<p>Use "orthogonal" to refer to things that are mutually-exclusive
or can't coincide. "We keep playing phone tag -- I think our
schedules must be orthogonal"</p>
<p>"About" becomes "to a first-order approximation"</p>
<p>Things are not difficult, they are "non-trivial"</p>
<p>Large discrepancies are "orders of magnitude apart"</p>
</blockquote>
<p>Other suggestions: a situation isn't "bad," it's "sub-optimal."
"Finite" can mean either "really big, but not infinite," or "really
small, but not zero." If you really want to sound advanced,
something that moves from one state to another slowly-- say, a
highway driver who takes a mile and a half to move from one lane
into the other-- does so "adiabatically."</p>
<p>I know I'm missing some obvious verbal tics. Leave your
suggestions in the comments.</p>
<a href=
"http://scienceblogs.com/principles/2008/03/talk_like_a_physicist.php#commentsArea">Read
the comments on this post...</a><img src=
"http://feeds.feedburner.com/~r/scienceblogs/uncertainprinciples/~4/251346240"
height="1" width="1" />]]></summary><content type="html" xml:base="http://feeds.feedburner.com/~r/scienceblogs/uncertainprinciples/~3/251346240/talk_like_a_physicist.php"><![CDATA[<p>Today ha been dubbed <a href=
"http://talklikeaphysicist.com/">"Talk Like a Physicist Day"</a>.
Why? Because we're at least as cool as pirates, that's why.</p>
<p>Over at Swans on Tea, Tom <a href=
"http://blogs.scienceforums.net/swansont/archives/114">offers some
vocabulary tips</a>:</p>
<blockquote>
<p>Use "canonical" when you mean "usual" or "standard." As in, "the
canonical example of talking like a physicist is to use the word
'canonical.'"</p>
<p>Use "orthogonal" to refer to things that are mutually-exclusive
or can't coincide. "We keep playing phone tag -- I think our
schedules must be orthogonal"</p>
<p>"About" becomes "to a first-order approximation"</p>
<p>Things are not difficult, they are "non-trivial"</p>
<p>Large discrepancies are "orders of magnitude apart"</p>
</blockquote>
<p>Other suggestions: a situation isn't "bad," it's "sub-optimal."
"Finite" can mean either "really big, but not infinite," or "really
small, but not zero." If you really want to sound advanced,
something that moves from one state to another slowly-- say, a
highway driver who takes a mile and a half to move from one lane
into the other-- does so "adiabatically."</p>
<p>I know I'm missing some obvious verbal tics. Leave your
suggestions in the comments.</p>
<a href=
"http://scienceblogs.com/principles/2008/03/talk_like_a_physicist.php#commentsArea">Read
the comments on this post...</a><img src=
"http://feeds.feedburner.com/~r/scienceblogs/uncertainprinciples/~4/251346240"
height="1" width="1" />]]></content></entry><entry><title type="html"><![CDATA[Michael Nielsen: Biweekly links for 03/14/2008]]></title><link href="http://feeds.feedburner.com/~r/michaelnielsen/wmna/~3/251323487/"/><id>http://feeds.feedburner.com/~r/michaelnielsen/wmna/~3/251323487/</id><updated>2008-03-14T10:53:06Z</updated><author><name>Michael Nielsen</name></author><summary type="html"><![CDATA[Google Search: “chief ontologist” OR “chief ontology officer” If I
had a time machine, I’d go back and tell my high school careers
counsellor that I wanted to be a Chief Ontology Officer when I grew
up. One Big Lab: Online collaborative manuscript annotation shwu
wants tools for online collaborative manuscript annotation. Anyone
want to help her [...]]]></summary><content type="html" xml:base="http://feeds.feedburner.com/~r/michaelnielsen/wmna/~3/251323487/"><![CDATA[<ul>
<li><a href=
'http://www.google.ca/search?hl=en&amp;client=firefox-a&amp;rls=org.mozilla%3Aen-US%3Aofficial&amp;hs=6Vu&amp;q=%22chief+ontologist%22+OR+%22chief+ontology+officer%22&amp;btnG=Search&amp;meta='>
Google Search: “chief ontologist” OR “chief ontology officer”</a>
<ul>
<li>If I had a time machine, I’d go back and tell my high school
careers counsellor that I wanted to be a Chief Ontology Officer
when I grew up.</li>
</ul>
</li>
<li><a href=
'http://onebiglab.blogspot.com/2008/03/online-collaborative-manuscript.html'>
One Big Lab: Online collaborative manuscript annotation</a>
<ul>
<li>shwu wants tools for online collaborative manuscript
annotation. Anyone want to help her out? The Django book project
and crit.org (now defunct, see the wayback machine) immediately
come to mind.</li>
</ul>
</li>
<li><a href=
'http://quantum-yutaka.blogspot.com/2008/03/scibarcamp.html'>Yutaka
Shikano on SciBarCamp</a></li>
<li><a href=
'http://timothypilgrim.vox.com/library/post/scibarcamp.html'>TimothyPilgrim
on SciBarCamp</a></li>
<li><a href=
'http://www.legito.net/worg/org-tutorials/index.php'>Org
tutorials</a>
<ul>
<li>I used to use Word to jot down my thoughts, and as an outlining
tool. Most of my writing, though, is done in emacs. I’ve recently
started using org mode for emacs, and am thinking it might be time
to make the switch completely.</li>
</ul>
</li>
<li><a href=
'http://nsaunders.wordpress.com/2008/03/10/rewards-output-and-academia/'>
What You’re Doing Is Rather Desperate: Rewards, output and
academia</a>
<ul>
<li>“The Nature Biotechnology article is recognised by academia and
qualifies for academic rewards. The blog posts - which are longer,
more detailed, written by enthusiastic communicators and in theory,
accessible to a much wider audience … are not.”</li>
</ul>
</li>
<li><a href=
'http://www.marginalrevolution.com/marginalrevolution/2008/03/cooked-books.html'>
Marginal Revolution: Cooked books</a>
<ul>
<li>Tyler Cowen: “If I had to guess whether Wikipedia or the median
refereed journal article on economics was more likely to be true,
after a not so long think I would opt for Wikipedia. This
comparison should give us pause.” Ouch. And wow.</li>
</ul>
</li>
<li><a href=
'http://www.clapclap.org/2007/04/hallelujah.html'>clapclap.org:
Hallelujah</a>
<ul>
<li>The history of Leonard Cohen’s song.</li>
</ul>
</li>
<li><a href='http://www.referencegames.com/'>Relativistic
asteroids</a></li>
<li><a href=
'http://www.37signals.com/svn/posts/908-tiny-projects-keep-it-new'>Tiny
projects keep it new - (37signals)</a>
<ul>
<li>“Shatter big projects into little pieces… Working on,
finishing, and launching one little piece at a time will help you
stay motivated because you’re always working on something new”</li>
</ul>
</li>
<li><a href='http://en.wikipedia.org/wiki/Rebbe'>Word of the week:
Rebbe</a>
<ul>
<li>Rebbe is a Yiddish term which means master, teacher, or mentor,
mostly referring to the leader of a Hassidic Jewish movement.
Compare to the Hebrew “Rabbi”</li>
</ul>
</li>
<li><a href=
'http://www.sciencemag.org/cgi/content/abstract/1136099'>Science:
The Increasing Dominance of Teams in Production of Knowledge:
Wuchty et al. 316 (5827): 1036 — Science</a>
<ul>
<li>“…teams increasingly dominate solo authors in the production of
knowledge… Teams typically produce more frequently cited research
than individuals do, and this advantage has been increasing over
time…knowledge creation has fundamentally changed.”</li>
</ul>
</li>
<li><a href=
'http://scienceblogs.com/clock/2007/08/final_scifoo_wrapup.php'>A
Blog Around The Clock : Final Scifoo Wrap-up</a>
<ul>
<li>Great summary of Sci Foo 2007 from Coturnix.</li>
</ul>
</li>
<li><a href=
'http://kk.org/ct2/2007/09/my-life-countdown-1.php'>Kevin Kelly:
Countdown Clock</a>
<ul>
<li>Kelly has a clock on his computer screen, counting down the
number of days to his (expected) death: “The time left is still too
short. And too close. And getting closer. And I’m sorry but I need
to do something else right now….”</li>
</ul>
</li>
</ul>
<p>Click <a href='http://del.icio.us/nielsen/'>here</a> for all of
my del.icio.us bookmarks.</p>
<img src=
'http://feeds.feedburner.com/~r/michaelnielsen/wmna/~4/251323487'
height='1' width='1' />]]></content></entry><entry><title type="html"><![CDATA[Gordon Watts: Superstition in the D0 Control Room]]></title><link href="http://gordonwatts.wordpress.com/2008/03/14/superstition-in-the-d0-control-room/"/><id>http://gordonwatts.wordpress.com/2008/03/14/superstition-in-the-d0-control-room/</id><updated>2008-03-14T10:52:21Z</updated><author><name>Gordon Watts</name></author><summary type="html"><![CDATA[There are lots of old superstitions - some of them we still live
our lives by. Running a large experiment like D0 is no different.
For example, there are a set of ducks along the console - the rumor
is if they aren’t there then the whole system will cease to
operate. I don’t think [...]]]></summary><content type="html" xml:base="http://gordonwatts.wordpress.com/2008/03/14/superstition-in-the-d0-control-room/"><![CDATA[<br />
<p>There are lots of old superstitions - some of them we still live
our lives by. Running a large experiment like D0 is no different.
For example, there are a set of ducks along the console - the rumor
is if they aren’t there then the whole system will cease to
operate. I don’t think anyone has been brave enough to remove them…
<img class='wp-smiley' src=
'http://gordonwatts.wordpress.com/wp-includes/images/smilies/icon_wink.gif'
alt=';-)' /></p>
<p>I pulled the following quote from a recent shift report:</p>
<blockquote>
<p>Beam was nice for a while.&nbsp; Then while talking to Bill Lee
about losing the beam, we lost the beam, thereby illustrating
Bill’s spooky powers in the control room.</p>
</blockquote>
<p>Bill has long been making our control room run smoothly, and
should know the lesson: don’t talk about loosing the beam! You’ll
jinx it!! [Technical reason: apparently an important power supply
went out of allowed operating range].</p>
<img src=
'http://feeds.wordpress.com/1.0/categories/gordonwatts.wordpress.com/755/'
border='0' alt='' /> <img src=
'http://feeds.wordpress.com/1.0/tags/gordonwatts.wordpress.com/755/'
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rel='nofollow'><img src=
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border='0' alt='' /></a> <a href=
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rel='nofollow'><img src=
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rel='nofollow'><img src=
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border='0' alt='' /></a> <a href=
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rel='nofollow'><img src=
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border='0' alt='' /></a> <img src=
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border='0' alt='' />]]></content></entry><entry><title type="html"><![CDATA[Chad Orzel: links for 2008-03-14]]></title><link href="http://feeds.feedburner.com/~r/scienceblogs/uncertainprinciples/~3/251285132/links_for_20080314.php"/><id>http://feeds.feedburner.com/~r/scienceblogs/uncertainprinciples/~3/251285132/links_for_20080314.php</id><updated>2008-03-14T10:24:20Z</updated><author><name>Chad Orzel</name></author><summary type="html"><![CDATA[<ul class="delicious">
<li>
<div class="delicious-link"><a href=
"http://www.thesmartset.com/article/article11080703.aspx">The Smart
Set: Sequins &amp; Scandals - November 8, 2007</a></div>
<div class="delicious-extended">"Figure skating is the
quintessential American sport, not merely because it is fiercely
individualistic while at the same time incredibly conformist, but
also because the athletes and fans, like the American electorate,
have an extraordinarily high tolera</div>
<div class="delicious-tags">(tags: <a href=
"http://del.icio.us/orzelc/sports">sports</a> <a href=
"http://del.icio.us/orzelc/stupid">stupid</a> <a href=
"http://del.icio.us/orzelc/society">society</a> <a href=
"http://del.icio.us/orzelc/culture">culture</a>)</div>
</li>
<li>
<div class="delicious-link"><a href=
"http://www.nytimes.com/2008/03/13/science/space/13winkw.html?_r=1&amp;ex=1363147200&amp;en=5fb3d1ff87c512e3&amp;ei=5088&amp;partner=rssnyt&amp;emc=rss&amp;oref=slogin">
What a Star's Orbiting Disk Is Made Of - New York Times</a></div>
<div class="delicious-extended">Sand.</div>
<div class="delicious-tags">(tags: <a href=
"http://del.icio.us/orzelc/astronomy">astronomy</a> <a href=
"http://del.icio.us/orzelc/science">science</a> <a href=
"http://del.icio.us/orzelc/news">news</a>)</div>
</li>
<li>
<div class="delicious-link"><a href=
"http://nanoscale.blogspot.com/2008/03/march-meeting-iii.html">nanoscale
views: March Meeting III</a></div>
<div class="delicious-extended">More from New Orleans.</div>
<div class="delicious-tags">(tags: <a href=
"http://del.icio.us/orzelc/physics">physics</a> <a href=
"http://del.icio.us/orzelc/meetings">meetings</a> <a href=
"http://del.icio.us/orzelc/science">science</a> <a href=
"http://del.icio.us/orzelc/news">news</a>)</div>
</li>
<li>
<div class="delicious-link"><a href=
"http://www.eurekalert.org/pub_releases/2008-03/dnl-nft030508.php">News
from the March 2008 American Physical Society Meeting</a></div>
<div class="delicious-extended">Official-type releases from
Brookhaven.</div>
<div class="delicious-tags">(tags: <a href=
"http://del.icio.us/orzelc/physics">physics</a> <a href=
"http://del.icio.us/orzelc/meetings">meetings</a> <a href=
"http://del.icio.us/orzelc/news">news</a> <a href=
"http://del.icio.us/orzelc/science">science</a>)</div>
</li>
<li>
<div class="delicious-link"><a href=
"http://www.eurekalert.org/pub_releases/2008-03/uoc--pdh030708.php">
Physicists discover how fundamental particles lose track of quantum
mechanical properties</a></div>
<div class="delicious-extended">"[A] series of experiments were
undertaken that utilized electron spins in diamond to investigate
different regimes of spin-bath interactions, and provide much
information about the decoherence dynamics."</div>
<div class="delicious-tags">(tags: <a href=
"http://del.icio.us/orzelc/physics">physics</a> <a href=
"http://del.icio.us/orzelc/quantum">quantum</a> <a href=
"http://del.icio.us/orzelc/science">science</a> <a href=
"http://del.icio.us/orzelc/news">news</a> <a href=
"http://del.icio.us/orzelc/experiment">experiment</a>)</div>
</li>
<li>
<div class="delicious-link"><a href=
"http://www.eurekalert.org/pub_releases/2008-03/nios-ass031308.php">
A sub-femtosecond stop watch for 'photon finish' races</a></div>
<div class="delicious-extended">"[A] photon takes about 20
femtoseconds less to get through a stack of 31 layers, totaling a
few microns across, when the stack begins and ends with high
refractive index layers rather than the opposite. The shorter time
delay is apparently superluminal."</div>
<div class="delicious-tags">(tags: <a href=
"http://del.icio.us/orzelc/physics">physics</a> <a href=
"http://del.icio.us/orzelc/quantum">quantum</a> <a href=
"http://del.icio.us/orzelc/optics">optics</a> <a href=
"http://del.icio.us/orzelc/science">science</a> <a href=
"http://del.icio.us/orzelc/news">news</a>)</div>
</li>
<li>
<div class="delicious-link"><a href=
"http://popdose.com/basement-songs-you-get-what-you-give-by-the-new-radicals/">
Basement Songs: New Radicals, "You Get What You Give" |
Popdose</a></div>
<div class="delicious-extended">I'm fond of this song, but not as
much as this guy.</div>
<div class="delicious-tags">(tags: <a href=
"http://del.icio.us/orzelc/music">music</a>)</div>
</li>
</ul>
<a href=
"http://scienceblogs.com/principles/2008/03/links_for_20080314.php#commentsArea">Read
the comments on this post...</a><img src=
"http://feeds.feedburner.com/~r/scienceblogs/uncertainprinciples/~4/251285132"
height="1" width="1" />]]></summary><content type="html" xml:base="http://feeds.feedburner.com/~r/scienceblogs/uncertainprinciples/~3/251285132/links_for_20080314.php"><![CDATA[<ul class="delicious">
<li>
<div class="delicious-link"><a href=
"http://www.thesmartset.com/article/article11080703.aspx">The Smart
Set: Sequins &amp; Scandals - November 8, 2007</a></div>
<div class="delicious-extended">"Figure skating is the
quintessential American sport, not merely because it is fiercely
individualistic while at the same time incredibly conformist, but
also because the athletes and fans, like the American electorate,
have an extraordinarily high tolera</div>
<div class="delicious-tags">(tags: <a href=
"http://del.icio.us/orzelc/sports">sports</a> <a href=
"http://del.icio.us/orzelc/stupid">stupid</a> <a href=
"http://del.icio.us/orzelc/society">society</a> <a href=
"http://del.icio.us/orzelc/culture">culture</a>)</div>
</li>
<li>
<div class="delicious-link"><a href=
"http://www.nytimes.com/2008/03/13/science/space/13winkw.html?_r=1&amp;ex=1363147200&amp;en=5fb3d1ff87c512e3&amp;ei=5088&amp;partner=rssnyt&amp;emc=rss&amp;oref=slogin">
What a Star's Orbiting Disk Is Made Of - New York Times</a></div>
<div class="delicious-extended">Sand.</div>
<div class="delicious-tags">(tags: <a href=
"http://del.icio.us/orzelc/astronomy">astronomy</a> <a href=
"http://del.icio.us/orzelc/science">science</a> <a href=
"http://del.icio.us/orzelc/news">news</a>)</div>
</li>
<li>
<div class="delicious-link"><a href=
"http://nanoscale.blogspot.com/2008/03/march-meeting-iii.html">nanoscale
views: March Meeting III</a></div>
<div class="delicious-extended">More from New Orleans.</div>
<div class="delicious-tags">(tags: <a href=
"http://del.icio.us/orzelc/physics">physics</a> <a href=
"http://del.icio.us/orzelc/meetings">meetings</a> <a href=
"http://del.icio.us/orzelc/science">science</a> <a href=
"http://del.icio.us/orzelc/news">news</a>)</div>
</li>
<li>
<div class="delicious-link"><a href=
"http://www.eurekalert.org/pub_releases/2008-03/dnl-nft030508.php">News
from the March 2008 American Physical Society Meeting</a></div>
<div class="delicious-extended">Official-type releases from
Brookhaven.</div>
<div class="delicious-tags">(tags: <a href=
"http://del.icio.us/orzelc/physics">physics</a> <a href=
"http://del.icio.us/orzelc/meetings">meetings</a> <a href=
"http://del.icio.us/orzelc/news">news</a> <a href=
"http://del.icio.us/orzelc/science">science</a>)</div>
</li>
<li>
<div class="delicious-link"><a href=
"http://www.eurekalert.org/pub_releases/2008-03/uoc--pdh030708.php">
Physicists discover how fundamental particles lose track of quantum
mechanical properties</a></div>
<div class="delicious-extended">"[A] series of experiments were
undertaken that utilized electron spins in diamond to investigate
different regimes of spin-bath interactions, and provide much
information about the decoherence dynamics."</div>
<div class="delicious-tags">(tags: <a href=
"http://del.icio.us/orzelc/physics">physics</a> <a href=
"http://del.icio.us/orzelc/quantum">quantum</a> <a href=
"http://del.icio.us/orzelc/science">science</a> <a href=
"http://del.icio.us/orzelc/news">news</a> <a href=
"http://del.icio.us/orzelc/experiment">experiment</a>)</div>
</li>
<li>
<div class="delicious-link"><a href=
"http://www.eurekalert.org/pub_releases/2008-03/nios-ass031308.php">
A sub-femtosecond stop watch for 'photon finish' races</a></div>
<div class="delicious-extended">"[A] photon takes about 20
femtoseconds less to get through a stack of 31 layers, totaling a
few microns across, when the stack begins and ends with high
refractive index layers rather than the opposite. The shorter time
delay is apparently superluminal."</div>
<div class="delicious-tags">(tags: <a href=
"http://del.icio.us/orzelc/physics">physics</a> <a href=
"http://del.icio.us/orzelc/quantum">quantum</a> <a href=
"http://del.icio.us/orzelc/optics">optics</a> <a href=
"http://del.icio.us/orzelc/science">science</a> <a href=
"http://del.icio.us/orzelc/news">news</a>)</div>
</li>
<li>
<div class="delicious-link"><a href=
"http://popdose.com/basement-songs-you-get-what-you-give-by-the-new-radicals/">
Basement Songs: New Radicals, "You Get What You Give" |
Popdose</a></div>
<div class="delicious-extended">I'm fond of this song, but not as
much as this guy.</div>
<div class="delicious-tags">(tags: <a href=
"http://del.icio.us/orzelc/music">music</a>)</div>
</li>
</ul>
<a href=
"http://scienceblogs.com/principles/2008/03/links_for_20080314.php#commentsArea">Read
the comments on this post...</a><img src=
"http://feeds.feedburner.com/~r/scienceblogs/uncertainprinciples/~4/251285132"
height="1" width="1" />]]></content></entry><entry><title type="html"><![CDATA[Marni Dee Sheppeard: M Theory  Lesson 168]]></title><link href="http://kea-monad.blogspot.com/2008/03/m-theory-lesson-168.html"/><id>http://kea-monad.blogspot.com/2008/03/m-theory-lesson-168.html</id><updated>2008-03-14T06:13:27Z</updated><author><name>Marni Dee Sheppeard</name></author><summary type="html"><![CDATA[Like Hamilton's dodecahedron, the squashed <a href=
'http://kea-monad.blogspot.com/2008/03/resolving-power.html'>permutoassociahedron</a>
also permits a <a href=
'http://mathworld.wolfram.com/HamiltonianCircuit.html'>circuit</a>
that passes once through each of the 120 vertices. It helps to
paint the squares, pentagons and dodecagons in different colours.
Try it! <a href=
'http://bp1.blogger.com/_j1PMRiUP1iY/R9oXYmgrgsI/AAAAAAAAAZE/Tao-naer1WA/s1600-h/zSquashPermAss.jpg'
onblur=
'try {parent.deselectBloggerImageGracefully();} catch(e) {}'><img src='http://bp1.blogger.com/_j1PMRiUP1iY/R9oXYmgrgsI/AAAAAAAAAZE/Tao-naer1WA/s400/zSquashPermAss.jpg'
border='0' id='BLOGGER_PHOTO_ID_5177476433037722306' alt='' style=
'display:block; margin:0px auto 10px; text-align:center;cursor:pointer; cursor:hand;'
name="BLOGGER_PHOTO_ID_5177476433037722306" /></a>]]></summary><content type="html" xml:base="http://kea-monad.blogspot.com/2008/03/m-theory-lesson-168.html"><![CDATA[Like Hamilton's dodecahedron, the squashed <a href=
'http://kea-monad.blogspot.com/2008/03/resolving-power.html'>permutoassociahedron</a>
also permits a <a href=
'http://mathworld.wolfram.com/HamiltonianCircuit.html'>circuit</a>
that passes once through each of the 120 vertices. It helps to
paint the squares, pentagons and dodecagons in different colours.
Try it! <a href=
'http://bp1.blogger.com/_j1PMRiUP1iY/R9oXYmgrgsI/AAAAAAAAAZE/Tao-naer1WA/s1600-h/zSquashPermAss.jpg'
onblur=
'try {parent.deselectBloggerImageGracefully();} catch(e) {}'><img src='http://bp1.blogger.com/_j1PMRiUP1iY/R9oXYmgrgsI/AAAAAAAAAZE/Tao-naer1WA/s400/zSquashPermAss.jpg'
border='0' id='BLOGGER_PHOTO_ID_5177476433037722306' alt='' style=
'display:block; margin:0px auto 10px; text-align:center;cursor:pointer; cursor:hand;'
name="BLOGGER_PHOTO_ID_5177476433037722306" /></a>]]></content></entry><entry><title type="html"><![CDATA[Steve Hsu: Wanted: a beautiful mind]]></title><link href="http://infoproc.blogspot.com/2008/03/wanted-beautiful-mind.html"/><id>http://infoproc.blogspot.com/2008/03/wanted-beautiful-mind.html</id><updated>2008-03-14T01:12:59Z</updated><author><name>Steve Hsu</name></author><summary type="html"><![CDATA[Nice work if you can get it! (I mean Brian Grazer's gig, not the
"cultural attaché" cum intellectual lackey...)<br />
<blockquote><br />
<a href=
'http://www.newyorker.com/talk/2008/03/10/080310ta_talk_widdicombe'>
New Yorker</a>: ...The rumor, according to one (unofficial) e-mail:
“Oscar-winning producer Brian Grazer (Da Vinci Code, A Beautiful
Mind, American Gangster) is looking for a new cultural attaché.”
The e-mail explained:<br />
<br />
This person would be responsible for keeping Brian abreast of
everything that’s going on in the world; politically, culturally,
musically. . . . They’re also responsible for finding an
interesting person for Brian to meet with every week . . . an
astronaut, a journalist, a philosopher, a buddhist monk. . . .
There is LOTS of reading for this position! Grazer may ask you to
read any book he’s interested in. You’ll probably get to read about
4 or 5 books a week and you may be required to travel with him on
his private plane to Hawaii, New York, Europe—teaching him anything
he asks you about along the way. . . . You will also be provided
with an assistant. . . . Salary is around $150,000 a year. . . .
You will be to Grazer what Karl Rove was to Bush.<br />
<br />
...Michael Rosenberg, the president of Imagine, the production
company Grazer owns with Ron Howard, said that about a hundred
would-be attachés have e-mailed résumés since word of the job got
out. One was Ed Cooke, twenty-six, a British writer and education
consultant. His résumé: philosophy-and-psych degree from Oxford,
three languages, a demonstrated interest in “the philosophy of
cricket.” “This seemed like a job that would suit me,” Cooke said.
He’d sent in a list of interesting people: the medieval scholar
Mary Carruthers; the cricket star Shane Warne; Dmitri
Nabokov.<br />
<br />
But Cooke didn’t make the final cut. By last week, Grazer’s staff
had already narrowed the potential attachés down to four finalists,
who would interview with the boss. “I’ve met a lot of good
candidates,” Grazer said, reached on his cell phone en route to a
meeting with the screenwriter for “Angels and Demons.” He said that
he’d been hiring cultural attachés for twenty years, ever since he
asked Jonas Salk’s assistant to help him track down interesting
people in science. Fifteen or twenty people have held the job since
then. (The “attaché” title started out as a joke.) “They have to be
really resourceful,” Grazer said. “I like to meet people in
dangerous organizations, and my cultural attaché finds out who that
person is—who runs the Yakuza, or the Masons, or MI5.” The best
attaché so far, Grazer said, has been Brad Grossman, the current
one, who is leaving the post, after four years. Grossman is
thirty-two; he owned a tutoring business before taking the job, and
Grazer said that he is especially good at explaining the things
he’s asked to learn about—bacteria or makeup or superdelegates.
“I’m looking for a person who has that teacherlike quality,” Grazer
said. “Also, it’s good to have a person who is a connector, who is
liked by people.”<br />
<br />
Grazer has had one bad attaché experience. “A few years ago, I
hired this really smarty-pants Harvard guy,” he said. “He was just
remarkably lazy. If he didn’t get the Wall Street Journal on his
desk, it was like it didn’t exist.” Still, he said, the experience
came with a lesson: “Under no condition can you teach
curiosity.”<br />
<br />
Before Grazer became a successful producer, he was—like most
people— his own cultural attaché. Two weeks ago, he found a letter
he’d written to the physicist Edward Teller during that period. “It
made me remember how much work it was,” Grazer said. “I had to do
the begging and grovelling and ass-kissing myself. I had to find
the newspapers and magazines. Even then, I put so much thought and
effort into trying to meet and learn from the people who mattered
to me.”<br /></blockquote>]]></summary><content type="html" xml:base="http://infoproc.blogspot.com/2008/03/wanted-beautiful-mind.html"><![CDATA[Nice work if you can get it! (I mean Brian Grazer's gig, not the
"cultural attaché" cum intellectual lackey...)<br />
<blockquote><br />
<a href=
'http://www.newyorker.com/talk/2008/03/10/080310ta_talk_widdicombe'>
New Yorker</a>: ...The rumor, according to one (unofficial) e-mail:
“Oscar-winning producer Brian Grazer (Da Vinci Code, A Beautiful
Mind, American Gangster) is looking for a new cultural attaché.”
The e-mail explained:<br />
<br />
This person would be responsible for keeping Brian abreast of
everything that’s going on in the world; politically, culturally,
musically. . . . They’re also responsible for finding an
interesting person for Brian to meet with every week . . . an
astronaut, a journalist, a philosopher, a buddhist monk. . . .
There is LOTS of reading for this position! Grazer may ask you to
read any book he’s interested in. You’ll probably get to read about
4 or 5 books a week and you may be required to travel with him on
his private plane to Hawaii, New York, Europe—teaching him anything
he asks you about along the way. . . . You will also be provided
with an assistant. . . . Salary is around $150,000 a year. . . .
You will be to Grazer what Karl Rove was to Bush.<br />
<br />
...Michael Rosenberg, the president of Imagine, the production
company Grazer owns with Ron Howard, said that about a hundred
would-be attachés have e-mailed résumés since word of the job got
out. One was Ed Cooke, twenty-six, a British writer and education
consultant. His résumé: philosophy-and-psych degree from Oxford,
three languages, a demonstrated interest in “the philosophy of
cricket.” “This seemed like a job that would suit me,” Cooke said.
He’d sent in a list of interesting people: the medieval scholar
Mary Carruthers; the cricket star Shane Warne; Dmitri
Nabokov.<br />
<br />
But Cooke didn’t make the final cut. By last week, Grazer’s staff
had already narrowed the potential attachés down to four finalists,
who would interview with the boss. “I’ve met a lot of good
candidates,” Grazer said, reached on his cell phone en route to a
meeting with the screenwriter for “Angels and Demons.” He said that
he’d been hiring cultural attachés for twenty years, ever since he
asked Jonas Salk’s assistant to help him track down interesting
people in science. Fifteen or twenty people have held the job since
then. (The “attaché” title started out as a joke.) “They have to be
really resourceful,” Grazer said. “I like to meet people in
dangerous organizations, and my cultural attaché finds out who that
person is—who runs the Yakuza, or the Masons, or MI5.” The best
attaché so far, Grazer said, has been Brad Grossman, the current
one, who is leaving the post, after four years. Grossman is
thirty-two; he owned a tutoring business before taking the job, and
Grazer said that he is especially good at explaining the things
he’s asked to learn about—bacteria or makeup or superdelegates.
“I’m looking for a person who has that teacherlike quality,” Grazer
said. “Also, it’s good to have a person who is a connector, who is
liked by people.”<br />
<br />
Grazer has had one bad attaché experience. “A few years ago, I
hired this really smarty-pants Harvard guy,” he said. “He was just
remarkably lazy. If he didn’t get the Wall Street Journal on his
desk, it was like it didn’t exist.” Still, he said, the experience
came with a lesson: “Under no condition can you teach
curiosity.”<br />
<br />
Before Grazer became a successful producer, he was—like most
people— his own cultural attaché. Two weeks ago, he found a letter
he’d written to the physicist Edward Teller during that period. “It
made me remember how much work it was,” Grazer said. “I had to do
the begging and grovelling and ass-kissing myself. I had to find
the newspapers and magazines. Even then, I put so much thought and
effort into trying to meet and learn from the people who mattered
to me.”<br /></blockquote>]]></content></entry><entry><title type="html"><![CDATA[Peter Woit: Electric-Magnetic Duality on a Half-Space]]></title><link href="http://www.math.columbia.edu/~woit/wordpress/?p=666"/><id>http://www.math.columbia.edu/~woit/wordpress/?p=666</id><updated>2008-03-14T01:02:35Z</updated><author><name>Peter Woit</name></author><summary type="html"><![CDATA[The past few weeks I’ve often been going down to the IAS in
Princeton on Thursdays to hear talks given as part of the special
program there this semester in mathematics. These talks included a
series of five talks by Witten; notes from David Ben-Zvi and Sergei
Gukov are available here. The first three [...]]]></summary><content type="html" xml:base="http://www.math.columbia.edu/~woit/wordpress/?p=666"><![CDATA[<p>The past few weeks I’ve often been going down to the IAS in
Princeton on Thursdays to hear talks given as part of the special
program there this semester in mathematics. These talks included a
series of five talks by Witten; notes from David Ben-Zvi and Sergei
Gukov are available <a href=
'http://www.math.utexas.edu/users/benzvi/GRASP/lectures/IASterm.html'>
here</a>.</p>
<p>The first three talks concentrated on the existence of a very
special superconformal six-dimensional QFT, and information that
could be derived from what is known of its properties. Such a
theory is an inherently quantum object, lacking a usual sort of
classical limit or Lagrangian formulation. Witten compares it to
the holomorphic conformal field theory that appear as “square
roots” of the WZW model. These field theories are closely related
to the representation theory of loop groups and at the core of a
several important mathematical developments of the last couple of
decades. The mathematical significance of the six-dimensional
theory remains much more mysterious, and Witten argues that
understanding this mystery is a very worth goal for both
mathematicians and physicists. . For more about this, see the
article <a href='http://arxiv.org/abs/0712.0157'>Conformal Field
Theory in Four and Six Dimensions</a>, based on his lecture at the
Oxford conference in honor of Graeme Segal’s 60th birthday back in
2002. Taking the six dimensions to be the product of a torus and a
four dimensional space, the existence of such a superconformal six
dimensional theory implies an SL(2,Z) symmetry of N=4
Super-Yang-Mills on the four dimensional space. This includes the
famous Olive-Montonen non-abelian electric-magnetic symmetry that
is responsible for Langlands duality in Witten’s 4d QFT approach to
Geometric Langlands.</p>
<p>The last two talks of the series dealt with a different topic,
boundary conditions in N=4 SYM. Taking this theory on the
half-space with boundary conditions, one can ask about the
implications of non-Abelian electric-magnetic duality for these
boundary conditions. Witten has recently been working on this
subject with Davide Gaiotto, he’ll be talking about it later this
month at a Stony Brook <a href=
'http://www.math.sunysb.edu/~tony/yang-simons-fest/'>symposium</a>
in honor of C. N. Yang and Jim Simons, and I assume a paper will
appear sooner or later. In his IAS lectures Witten was talking to
mathematicians and arguing that “universal” operations (ones that
can be done uniformly for all Riemann surfaces) in geometric
Langlands should all come from the properties of these boundary
conditions. Note that in this work what appears is the full N=4 SYM
theory, not just the topological twisted version. This theory plays
a central role in AdS/CFT, so if new information about its physics
arises from this study, this should be directly interesting for
physics, although Witten did not discuss this in his talks.</p>
<p>The two sorts of boundary conditions that get related by duality
are analogs of Neumann and Dirichlet boundary conditions. The
Neumann boundary conditions involve superconformal 3d QFTs,
examples of which were studied by Intriligator and Seiberg in their
1996 paper <a href='http://arxiv.org/abs/hep-th/9607207'>Mirror
Symmetry in Three Dimensions</a>. Witten has previously worked on
this kind of thing in the Abelian case, see <a href=
'http://arxiv.org/abs/hep-th/0307041'>here</a>.</p>
<p>During these visits to the IAS I got the chance to meet
Meng-Chwan Tan, who is there in the Physics group this year. He has
been working on a different QFT approach to geometric Langlands,
one that is purely two-dimensional and based in conformal field
theory, using (0,2) sigma models on flag manifolds, and has just
posted a the revised for publication version of his paper on the
subject <a href='http://arxiv.org/abs/0710.5796'>here</a>. This is
much closer to the approach to geometric Langlands via conformal
field theory that Edward Frenkel has described <a href=
'http://arxiv.org/abs/hep-th/0512172'>here</a>.</p>
<p>In other geometric Langlands news, there was a workshop on
Homological Mirror Symmetry recently in Miami, with notes from many
of the talks available <a href=
'http://www-math.mit.edu/~auroux/frg/miami08.html'>here</a> (and a
blog posting by Joel Kamnitzer <a href=
'http://sbseminar.wordpress.com/2008/02/27/geometric-langlands-from-a-tqft-perspective/'>
here</a>). And there’s <a href=
'http://www.math.ias.edu/pages/activities/conferencesworkshops/conferences/algebro-geometric-derived-categories-and-applications/agenda.php'>
another one</a> (notes <a href=
'http://www.math.utexas.edu/users/benzvi/GRASP/lectures/IASderived.html'>
here</a> from David Ben-Zvi) going on this week at the IAS. I
better stop now, go and get some sleep so I can head down there
tomorrow morning to catch the last day of it.</p>]]></content></entry><entry><title type="html"><![CDATA[David Hogg: calibration]]></title><link href="http://hoggresearch.blogspot.com/2008/03/calibration.html"/><id>http://hoggresearch.blogspot.com/2008/03/calibration.html</id><updated>2008-03-13T22:02:44Z</updated><author><name>David Hogg</name></author><summary type="html"><![CDATA[<p>I spent a great morning at the CfA vising the plate scanning
project <a href='http://hea-www.harvard.edu/DASCH/'>DASCH</a>. The
plate scanner is beautiful, and I saw it in action. I also saw the
100 tons of plates in the plate stacks, and was suitably impressed
with the care with which they are maintaining and carrying forward
all the meta-data they have. Then they apply some good automatic
calibration and are building an archive. I learned from Josh
Grindlay that there are enough plates in the Harvard archive alone
to have <i>fully imaged the sky 500 times over</i>.</p>
<p>Earlier in the morning I met with Chris Stubbs and discussed
many issues related to performing precise calibration of
astronomical data sets and providing enough information back to
users that the data set will play well with others. We put in some
good hours on truly fundamental things such as: <q>What does a
telescope really measure?</q> (integrals of the photon phase-space
density, in my view) and <q>All precise observations are
necessarily relative to astronomical sources with (fundamentally)
unknown spectral properties.</q> Stubbs is a deep thinker, and
obviously I would say that because he thinks about these things
much as I do! Now here's to him taking over the world and bending
it to his will.</p>]]></summary><content type="html" xml:base="http://hoggresearch.blogspot.com/2008/03/calibration.html"><![CDATA[<p>I spent a great morning at the CfA vising the plate scanning
project <a href='http://hea-www.harvard.edu/DASCH/'>DASCH</a>. The
plate scanner is beautiful, and I saw it in action. I also saw the
100 tons of plates in the plate stacks, and was suitably impressed
with the care with which they are maintaining and carrying forward
all the meta-data they have. Then they apply some good automatic
calibration and are building an archive. I learned from Josh
Grindlay that there are enough plates in the Harvard archive alone
to have <i>fully imaged the sky 500 times over</i>.</p>
<p>Earlier in the morning I met with Chris Stubbs and discussed
many issues related to performing precise calibration of
astronomical data sets and providing enough information back to
users that the data set will play well with others. We put in some
good hours on truly fundamental things such as: <q>What does a
telescope really measure?</q> (integrals of the photon phase-space
density, in my view) and <q>All precise observations are
necessarily relative to astronomical sources with (fundamentally)
unknown spectral properties.</q> Stubbs is a deep thinker, and
obviously I would say that because he thinks about these things
much as I do! Now here's to him taking over the world and bending
it to his will.</p>]]></content></entry><entry><title type="html"><![CDATA[Michael Nielsen: Investing in undervalued human capital: the Y Combinator model]]></title><link href="http://feeds.feedburner.com/~r/michaelnielsen/wmna/~3/250994829/"/><id>http://feeds.feedburner.com/~r/michaelnielsen/wmna/~3/250994829/</id><updated>2008-03-13T21:15:59Z</updated><author><name>Michael Nielsen</name></author><summary type="html"><![CDATA[Y Combinator (YC) is a small Cambridge-based firm that for the past
few years has been carrying out a remarkable experiment. What
they’ve been doing is investing money and training in (mostly)
young hackers, helping them get technology companies up and running
to the point where more more conventional investment processes like
venture capital [...]]]></summary><content type="html" xml:base="http://feeds.feedburner.com/~r/michaelnielsen/wmna/~3/250994829/"><![CDATA[<p><a href='http://ycombinator.com/'>Y Combinator (YC)</a> is a
small Cambridge-based firm that for the past few years has been
carrying out a remarkable experiment. What they’ve been doing is
investing money and training in (mostly) young hackers, helping
them get technology companies up and running to the point where
more more conventional investment processes like venture capital
can kick in. Many YC funded companies have been successful, with
several making their founders wealthy at an early age.</p>
<p>At first glance, YC may appear only of interest to business or
technology people. In fact, there are broader things one may learn
from the model, with applications and importance outside business
and technology.</p>
<p>If you’re not familiar with how YC works, it goes something like
this. Twice a year, YC calls for applications to be submitted,
either for its Winter or its Summer programs. Applications are
submitted by small teams of people (”founders”), typically in their
twenties, who would like to start or have recently started a
technology company. YC evaluates the applications, and the best are
asked to join the YC program. Successful applicants typically
receive $5k + $5k per founder to support them for three months, and
are required to move to Boston (for the Summer program), or the San
Francisco Bay Area (for the Winter program). All the YC teams meet
together once or twice a week, to talk with each other and with the
YC partners, as well as with a changing cast of expert entrepeneurs
specially brought in from outside. The three month program
concludes with “Demo Day”, where the founders demonstrate what
they’ve built to a large group of angel investors and venture
capitalists, in the hopes of sparking further interest. In return
for this program, the founders give up a small percentage of their
company, typically between 2 and 10 percent.</p>
<p>What makes the YC program successful is that YC have identified
a large group of people whose talents were previously undervalued
and underutilized, in large part because of their age and lack of
experience. For more than thirty years, high-school geeks have
played with technology, gone off to university, where they continue
to play with technology, often doing astounding and innovative
things, but rarely having the entrepeneurial skills or connections
to turn their ideas into marketable products. At the end of it all,
they go off to work for a big established technology company like
Microsoft.</p>
<p>YC has asked a big “what if?” question: what if we gave these
talented people an opportunity to build their own company, from the
ground up, and gave them training in entrepeneurial skills they
lack, complementary to their existing technical ability? Might it
be that if we provide this training (which is relatively easy to
do), then these people will create more value than if they were off
working for big existing technology companies?</p>
<p>It is evident from the above description that this process can
be abstracted away to a core unrelated to technology:</p>
<ul>
<li>Identify a talented group of people who are at present
<em>undervalued</em>, i.e., not being given an opportunity to
contribute commensurate with their talents.</li>
<li>Set up a competitive program whereby people in your target
group can apply for support.</li>
<li>Select the best applicants for support.</li>
<li>Help educate successful applicants, trading off the costs of
the education against the value that comes from their increased
probability of success.</li>
<li>Make sure you market yourself to the desired group of people,
so you get the best possible pool of candidates (e.g., <a href=
'http://www.paulgraham.com/articles.html'>here</a> and <a href=
'http://news.ycombinator.com'>here</a>).</li>
</ul>
<p>What’s special about YC is the group they’ve identified: young
hackers, whose lack of experience means they often have a hard time
being considered seriously by existing investors such as venture
capitalists. Ironically, this is in part because the venture fund
model typically involves investments that are, at a minimum,
hundreds of thousands of dollars. Given a choice between investing
that money in a 35-year old Harvard MBA’s startup, and a team of
three unshaven 21 year-old hackers, most venture partners will go
for the Harvard MBA. Part of YC’s insight is that in 2008 many
technology companies can be launched for just a few tens of
thousands of dollars, far less than the venture funds provide.</p>
<p>Other organizations have adopted an analogous strategy to YC,
but for a different group of otherwise undervalued people. A good
example is microfinance organizations like the Grameen Bank, which
provide small loans to assist entrepeneurs in the developing world.
The success of the Grameen Bank indicates that investors previously
underestimated the talents of the lendees to build successful
businesses. An interesting social consequence common to YC and the
Grameen Bank is that both empower people who are otherwise somewhat
disenfranchised. (Obviously, the effect is far greater in the case
of the Grameen Bank.)</p>
<p>This process of identifiying a talented group of people who are
undervalued by the investment market is a curious one. An
uncritical advocate of the free market might counter that such
people shouldn’t exist - surely investors would have already
tracked them down, and offered to invest. In fact, YC is a clear
case where (up to now) the market has failed badly, due to the
blinkered narrowness of investors. Is it more risky to offer one
million dollars to finance a Harvard MBA in their new technology
venture, or to fund twenty groups of talented twenty-one year old
hackers, at a cost of about $50k each (including the training costs
and other overheads)? My money would be on the twenty-one year olds
to make a greater aggregate return, but I suspect most investors
would feel much safer going with the Harvard MBA - even if they
fail, it’s a lot easier to defend your choice to your peers.</p>
<p>What other undervalued sources of human capital might this
general model be applied to? When I started to think about this
question, I quickly came up with dozens of possible groups. Here’s
the first few that came to mind:</p>
<ul>
<li>Talented people who happen to have been born in the wrong place
for their talents to flourish. The top students at (for example)
the big IITs in India are incredibly talented. While India offers
increasing opportunities for technology entrepeneurs, imagine the
results of bringing some of the more entrepeneurial students to
Silicon Valley, and helping them get set up with technology
companies. Think YC with a visa program.</li>
<li>The elderly. As a society, we cut many extremely talented and
active people off from contributing society, at great cost to them,
and to society as a whole. It’d be great to find ways their talents
could be made better use of.</li>
<li>Bright PhD students in insanely competitive and challenging
academic subjects, where even extraordinary students may have
trouble getting good academic jobs, and where those same students
may lack the connections to find jobs outside academia that make
good use of their talents.</li>
<li>My current hometown of Waterloo, Canada, is a pretty good
setting for a YC style program. It has a growing startup culture,
and two universities (University of Waterloo and Wilfred Laurier
University) with, respectively, strong technology and business
programs. As a rough indicator of student quality, in programming
and mathematics competitions, University of Waterloo students are
routinely competitive with the best from MIT and other top US
Universities. At present, many of these students go to work for
large technology companies elsewhere - the University of Waterloo
is sometimes said to be Microsoft’s single largest recruiting
target. Something like YC would, I think, be highly successful
here, although it would need to compensate for a relative paucity
of local investors.</li>
</ul>
<img src=
'http://feeds.feedburner.com/~r/michaelnielsen/wmna/~4/250994829'
height='1' width='1' />]]></content></entry><entry><title type="html"><![CDATA[David Hogg: innovative computing]]></title><link href="http://hoggresearch.blogspot.com/2008/03/innovative-computing.html"/><id>http://hoggresearch.blogspot.com/2008/03/innovative-computing.html</id><updated>2008-03-13T18:54:37Z</updated><author><name>David Hogg</name></author><summary type="html"><![CDATA[<p>I spent the day at Harvard between the CfA and the Institute for
Innovative Computing, where I gave my automated astrometry and
open-source sky survey talk. I also spent some time chatting with
Willman about our projects with Zolotov, and with the IIC staff
about computation in science.</p>]]></summary><content type="html" xml:base="http://hoggresearch.blogspot.com/2008/03/innovative-computing.html"><![CDATA[<p>I spent the day at Harvard between the CfA and the Institute for
Innovative Computing, where I gave my automated astrometry and
open-source sky survey talk. I also spent some time chatting with
Willman about our projects with Zolotov, and with the IIC staff
about computation in science.</p>]]></content></entry><entry><title type="html"><![CDATA[Steinn Sigurðsson: Carnival of Space]]></title><link href="http://feeds.feedburner.com/~r/DynamicsOfCats/~3/250896372/carnival_of_space_38_1.php"/><id>http://feeds.feedburner.com/~r/DynamicsOfCats/~3/250896372/carnival_of_space_38_1.php</id><updated>2008-03-13T18:53:58Z</updated><author><name>Steinn Sigur&#240;sson</name></author><summary type="html"><![CDATA[<p>I've lost count, but there is a new <a href=
"http://www.missyfrye.net/Hoyeya/?p=456">Carnival of Space</a> over
at <a href="http://www.missyfrye.net/Hoyeya/">Missy's place</a></p>
<a href=
"http://scienceblogs.com/catdynamics/2008/03/carnival_of_space_38_1.php#commentsArea">Read
the comments on this post...</a><img src=
"http://feeds.feedburner.com/~r/DynamicsOfCats/~4/250896372"
height="1" width="1" />]]></summary><content type="html" xml:base="http://feeds.feedburner.com/~r/DynamicsOfCats/~3/250896372/carnival_of_space_38_1.php"><![CDATA[<p>I've lost count, but there is a new <a href=
"http://www.missyfrye.net/Hoyeya/?p=456">Carnival of Space</a> over
at <a href="http://www.missyfrye.net/Hoyeya/">Missy's place</a></p>
<a href=
"http://scienceblogs.com/catdynamics/2008/03/carnival_of_space_38_1.php#commentsArea">Read
the comments on this post...</a><img src=
"http://feeds.feedburner.com/~r/DynamicsOfCats/~4/250896372"
height="1" width="1" />]]></content></entry><entry><title type="html"><![CDATA[Steve Hsu: 2 million minutes: US vs China and India education]]></title><link href="http://infoproc.blogspot.com/2008/03/2-million-minutes-education-in-us-vs.html"/><id>http://infoproc.blogspot.com/2008/03/2-million-minutes-education-in-us-vs.html</id><updated>2008-03-13T17:34:07Z</updated><author><name>Steve Hsu</name></author><summary type="html"><![CDATA[Have a look at this <a href='http://www.2mminutes.com/'>documentary
film</a> (<a href=
'http://youtube.com/watch?v=WS_QENuOYL8'>trailer</a> below) about
global education and competitiveness. The producer is a US venture
capitalist who has spent time abroad in China and India.<br />
<br />
<br />
<br />
<br />
<br />
<a href=
'http://online.wsj.com/article/SB120535107110431171.html?mod=hps_us_editors_picks'>
WSJ</a>: ...Bob Compton, a Memphis-based venture capitalist, ran
into many kids like Jack when he was traveling in China and India.
They were two and three years ahead of his two teenage daughters --
not just in math and science, but in almost every other subject,
too. That discovery prompted him to make a documentary called "2
Million Minutes," which followed students in the U.S., India and
China to show how they spent their four years of high school --
which works out to about two million minutes.<br />
<br />
The film's conclusion: Chinese high-school students spend almost
twice as much time on schoolwork as their American peers. (Indian
kids spend half again as much time as Americans.)<br />
<br />
In Beijing, Jack used to average three or four hours of homework a
day. In his Peoria high school, he spent less than an hour a day.
At IMSA, homework demands around two hours a day, and Jack still
has two hours to play basketball. He told me he's learning and
happy.]]></summary><content type="html" xml:base="http://infoproc.blogspot.com/2008/03/2-million-minutes-education-in-us-vs.html"><![CDATA[Have a look at this <a href='http://www.2mminutes.com/'>documentary
film</a> (<a href=
'http://youtube.com/watch?v=WS_QENuOYL8'>trailer</a> below) about
global education and competitiveness. The producer is a US venture
capitalist who has spent time abroad in China and India.<br />
<br />
<br />
<br />
<br />
<br />
<a href=
'http://online.wsj.com/article/SB120535107110431171.html?mod=hps_us_editors_picks'>
WSJ</a>: ...Bob Compton, a Memphis-based venture capitalist, ran
into many kids like Jack when he was traveling in China and India.
They were two and three years ahead of his two teenage daughters --
not just in math and science, but in almost every other subject,
too. That discovery prompted him to make a documentary called "2
Million Minutes," which followed students in the U.S., India and
China to show how they spent their four years of high school --
which works out to about two million minutes.<br />
<br />
The film's conclusion: Chinese high-school students spend almost
twice as much time on schoolwork as their American peers. (Indian
kids spend half again as much time as Americans.)<br />
<br />
In Beijing, Jack used to average three or four hours of homework a
day. In his Peoria high school, he spent less than an hour a day.
At IMSA, homework demands around two hours a day, and Jack still
has two hours to play basketball. He told me he's learning and
happy.]]></content></entry><entry><title type="html"><![CDATA[Michael Nielsen: The curse of busy-ness]]></title><link href="http://feeds.feedburner.com/~r/michaelnielsen/wmna/~3/250874586/"/><id>http://feeds.feedburner.com/~r/michaelnielsen/wmna/~3/250874586/</id><updated>2008-03-13T17:14:00Z</updated><author><name>Michael Nielsen</name></author><summary type="html"><![CDATA[<p>Why do powerful, intelligent, and accomplished people so often
exhibit cluelessness or ignorance? (Examples can be supplied on
demand, in the unlikely event you need them.)</p>
<p>I don’t mean to rip on powerful people, many of whom become
powerful because of outstanding personal traits. But I do think
it’s worth understanding the puzzle of why so many people do great
things in their youth, and then do apparently sillier things as
they get older.</p>
<p>I think my <a href='http://michaelnielsen.org/blog/?p=317'>post
about the bias towards power</a> contains a partial explanation:
powerful people’s ideas often aren’t tested as rigorously as those
of the less powerful, and they find it easier to act while ignoring
good advice. As an example, a regular Joe with an idea for starting
a company has to convince other people of the idea in order to
attract investment. A wealthy entrepeneur finds it much easier to
get silly ideas funded, in part by investing their own wealth, and
in part because other people give undue weight to their words.</p>
<p>(This is also why comics and superheros like Spiderman are
interesting: they show what happens when basically well-intentioned
people can act without constraint. The results often aren’t
pretty.)</p>
<p>However, I think the bias towards power is only part of an
explanation. Another part is that powerful people are often far too
busy and focused. If you don’t create time just to fool around
(”purposeless delectation in ideas” was Gian-Carlo Rota’s lovely
phrase), you end up narrow, clueless, and irrelevant. It’s funny to
hear that <a href=
'http://thinkprogress.org/2006/11/15/larry-king-internet/'>CNN’s
Larry King has never used the net</a>, or that <a href=
'http://www.miamiherald.com/851/story/444533.html'>George Bush (the
elder) was amazed by supermarket barcode scanners in 1992</a>, but,
really, these people must have some massive blind spots.</p>
<img src=
'http://feeds.feedburner.com/~r/michaelnielsen/wmna/~4/250874586'
height='1' width='1' />]]></summary><content type="html" xml:base="http://feeds.feedburner.com/~r/michaelnielsen/wmna/~3/250874586/"><![CDATA[<p>Why do powerful, intelligent, and accomplished people so often
exhibit cluelessness or ignorance? (Examples can be supplied on
demand, in the unlikely event you need them.)</p>
<p>I don’t mean to rip on powerful people, many of whom become
powerful because of outstanding personal traits. But I do think
it’s worth understanding the puzzle of why so many people do great
things in their youth, and then do apparently sillier things as
they get older.</p>
<p>I think my <a href='http://michaelnielsen.org/blog/?p=317'>post
about the bias towards power</a> contains a partial explanation:
powerful people’s ideas often aren’t tested as rigorously as those
of the less powerful, and they find it easier to act while ignoring
good advice. As an example, a regular Joe with an idea for starting
a company has to convince other people of the idea in order to
attract investment. A wealthy entrepeneur finds it much easier to
get silly ideas funded, in part by investing their own wealth, and
in part because other people give undue weight to their words.</p>
<p>(This is also why comics and superheros like Spiderman are
interesting: they show what happens when basically well-intentioned
people can act without constraint. The results often aren’t
pretty.)</p>
<p>However, I think the bias towards power is only part of an
explanation. Another part is that powerful people are often far too
busy and focused. If you don’t create time just to fool around
(”purposeless delectation in ideas” was Gian-Carlo Rota’s lovely
phrase), you end up narrow, clueless, and irrelevant. It’s funny to
hear that <a href=
'http://thinkprogress.org/2006/11/15/larry-king-internet/'>CNN’s
Larry King has never used the net</a>, or that <a href=
'http://www.miamiherald.com/851/story/444533.html'>George Bush (the
elder) was amazed by supermarket barcode scanners in 1992</a>, but,
really, these people must have some massive blind spots.</p>
<img src=
'http://feeds.feedburner.com/~r/michaelnielsen/wmna/~4/250874586'
height='1' width='1' />]]></content></entry><entry><title type="html"><![CDATA[Chad Orzel: FutureBaby Playlist: H-N]]></title><link href="http://feeds.feedburner.com/~r/scienceblogs/uncertainprinciples/~3/250841294/futurebaby_playlist_hn.php"/><id>http://feeds.feedburner.com/~r/scienceblogs/uncertainprinciples/~3/250841294/futurebaby_playlist_hn.php</id><updated>2008-03-13T16:51:10Z</updated><author><name>Chad Orzel</name></author><summary type="html"><![CDATA[<p>Looking at this segment of the playlist, it's clear that I was,
consciously or not, giving a good deal of weight to how well a
given song works as a sing-along. For whatever reason, this chunk
of the artist alphabet is loaded with tunes that are maybe a little
dubious content-wise, but good fun to sing along with.</p>
<a href=
"http://scienceblogs.com/principles/2008/03/futurebaby_playlist_hn.php">Read
the rest of this post...</a> | <a href=
"http://scienceblogs.com/principles/2008/03/futurebaby_playlist_hn.php#commentsArea">
Read the comments on this post...</a><img src=
"http://feeds.feedburner.com/~r/scienceblogs/uncertainprinciples/~4/250841294"
height="1" width="1" />]]></summary><content type="html" xml:base="http://feeds.feedburner.com/~r/scienceblogs/uncertainprinciples/~3/250841294/futurebaby_playlist_hn.php"><![CDATA[<p>Looking at this segment of the playlist, it's clear that I was,
consciously or not, giving a good deal of weight to how well a
given song works as a sing-along. For whatever reason, this chunk
of the artist alphabet is loaded with tunes that are maybe a little
dubious content-wise, but good fun to sing along with.</p>
<a href=
"http://scienceblogs.com/principles/2008/03/futurebaby_playlist_hn.php">Read
the rest of this post...</a> | <a href=
"http://scienceblogs.com/principles/2008/03/futurebaby_playlist_hn.php#commentsArea">
Read the comments on this post...</a><img src=
"http://feeds.feedburner.com/~r/scienceblogs/uncertainprinciples/~4/250841294"
height="1" width="1" />]]></content></entry><entry><title type="html"><![CDATA[Chad Orzel: Lab Visit Report: Francium]]></title><link href="http://feeds.feedburner.com/~r/scienceblogs/uncertainprinciples/~3/250800374/lab_visit_report_francium.php"/><id>http://feeds.feedburner.com/~r/scienceblogs/uncertainprinciples/~3/250800374/lab_visit_report_francium.php</id><updated>2008-03-13T15:32:49Z</updated><author><name>Chad Orzel</name></author><summary type="html"><![CDATA[<p><a href="http://www.researchblogging.org"><img alt=
"ResearchBlogging.org" class="inset" src=
"http://www.researchblogging.org/images/rbicons/ResearchBlogging-Medium-White.png"
width="80" height="50" /></a>As I mentioned a few days ago, I
visited Luis Orozco's lab during our trip to DC last week. I
already talked about his cavity QED stuff, but that's only one of
the projects under development. He's also working on a
next-generation apparatus for the laser cooling and trapping of
francium, to be done at the <a href=
"http://www.triumf.info/">TRIUMF accelerator in Vancouver</a>--
francium is an element with no stable isotopes, and at most a few
grams of it exist on the earth at any given moment. Luis and his
students demonstrated the laser cooling of francium a few years
back, using atoms made in an accelerator at Stony Brook out on Long
Island.</p>
<p>Why would anyone care about francium? The reasons are laid out
in <a href="http://arxiv.org/abs/physics/0412124">"Measurement
method for the nuclear anapole moment of laser-trapped alkali-metal
atoms"</a> (link to arXiv preprint, because it's free; the
published version is <a href=
"http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&amp;id=PLRAAN000075000003033418000001&amp;idtype=cvips&amp;gifs=yes">
this <cite>Physical Review A</cite></a> paper). Francium is of
interest precisely because it's a heavy element with no stable
isotopes. The very large nucleus of francium means that weak
interactions can produce an anapole moment in the nucleus, which
would be a signature of parity non-conservation (PNC), and a
possible indicator of new physics. They have an idea for a way to
measure this using precision spectroscopy.</p>
<a href=
"http://scienceblogs.com/principles/2008/03/lab_visit_report_francium.php">Read
the rest of this post...</a> | <a href=
"http://scienceblogs.com/principles/2008/03/lab_visit_report_francium.php#commentsArea">
Read the comments on this post...</a><img src=
"http://feeds.feedburner.com/~r/scienceblogs/uncertainprinciples/~4/250800374"
height="1" width="1" />]]></summary><content type="html" xml:base="http://feeds.feedburner.com/~r/scienceblogs/uncertainprinciples/~3/250800374/lab_visit_report_francium.php"><![CDATA[<p><a href="http://www.researchblogging.org"><img alt=
"ResearchBlogging.org" class="inset" src=
"http://www.researchblogging.org/images/rbicons/ResearchBlogging-Medium-White.png"
width="80" height="50" /></a>As I mentioned a few days ago, I
visited Luis Orozco's lab during our trip to DC last week. I
already talked about his cavity QED stuff, but that's only one of
the projects under development. He's also working on a
next-generation apparatus for the laser cooling and trapping of
francium, to be done at the <a href=
"http://www.triumf.info/">TRIUMF accelerator in Vancouver</a>--
francium is an element with no stable isotopes, and at most a few
grams of it exist on the earth at any given moment. Luis and his
students demonstrated the laser cooling of francium a few years
back, using atoms made in an accelerator at Stony Brook out on Long
Island.</p>
<p>Why would anyone care about francium? The reasons are laid out
in <a href="http://arxiv.org/abs/physics/0412124">"Measurement
method for the nuclear anapole moment of laser-trapped alkali-metal
atoms"</a> (link to arXiv preprint, because it's free; the
published version is <a href=
"http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&amp;id=PLRAAN000075000003033418000001&amp;idtype=cvips&amp;gifs=yes">
this <cite>Physical Review A</cite></a> paper). Francium is of
interest precisely because it's a heavy element with no stable
isotopes. The very large nucleus of francium means that weak
interactions can produce an anapole moment in the nucleus, which
would be a signature of parity non-conservation (PNC), and a
possible indicator of new physics. They have an idea for a way to
measure this using precision spectroscopy.</p>
<a href=
"http://scienceblogs.com/principles/2008/03/lab_visit_report_francium.php">Read
the rest of this post...</a> | <a href=
"http://scienceblogs.com/principles/2008/03/lab_visit_report_francium.php#commentsArea">
Read the comments on this post...</a><img src=
"http://feeds.feedburner.com/~r/scienceblogs/uncertainprinciples/~4/250800374"
height="1" width="1" />]]></content></entry><entry><title type="html"><![CDATA[Chad Orzel: Tips for Speakers]]></title><link href="http://feeds.feedburner.com/~r/scienceblogs/uncertainprinciples/~3/250769067/tips_for_speakers.php"/><id>http://feeds.feedburner.com/~r/scienceblogs/uncertainprinciples/~3/250769067/tips_for_speakers.php</id><updated>2008-03-13T14:17:08Z</updated><author><name>Chad Orzel</name></author><summary type="html"><![CDATA[<p>Over at the new(ish) Of Two Minds, Shelley has posted a <a href=
"http://scienceblogs.com/twominds/2008/03/how_to_give_a_bad_science_pres.php">
video giving advice on scientific presentations</a> from a couple
of guys at Michigan. They offer a few quick tips to giving better
presentations:</p>
<ul>
<li>Know your material well enough to give it without slides</li>
<li>Skip the outline (for short talks in particular)</li>
<li>Minimize text on slides</li>
<li>Make your figures big and visible</li>
</ul>
<p>The central point is really to put the focus on the data, not
the words or slides.</p>
<p>The one specific tip I would add to their list is this: When you
put up a graph, you should clearly identify what is being plotted
on what axes. The first thing you say should be "Here we have YYYY
on the vertical axis versus XXXX on the horizontal axis," so that
everybody knows what you're showing, without having to squint to
read the labels.</p>
<a href=
"http://scienceblogs.com/principles/2008/03/tips_for_speakers.php">Read
the rest of this post...</a> | <a href=
"http://scienceblogs.com/principles/2008/03/tips_for_speakers.php#commentsArea">
Read the comments on this post...</a><img src=
"http://feeds.feedburner.com/~r/scienceblogs/uncertainprinciples/~4/250769067"
height="1" width="1" />]]></summary><content type="html" xml:base="http://feeds.feedburner.com/~r/scienceblogs/uncertainprinciples/~3/250769067/tips_for_speakers.php"><![CDATA[<p>Over at the new(ish) Of Two Minds, Shelley has posted a <a href=
"http://scienceblogs.com/twominds/2008/03/how_to_give_a_bad_science_pres.php">
video giving advice on scientific presentations</a> from a couple
of guys at Michigan. They offer a few quick tips to giving better
presentations:</p>
<ul>
<li>Know your material well enough to give it without slides</li>
<li>Skip the outline (for short talks in particular)</li>
<li>Minimize text on slides</li>
<li>Make your figures big and visible</li>
</ul>
<p>The central point is really to put the focus on the data, not
the words or slides.</p>
<p>The one specific tip I would add to their list is this: When you
put up a graph, you should clearly identify what is being plotted
on what axes. The first thing you say should be "Here we have YYYY
on the vertical axis versus XXXX on the horizontal axis," so that
everybody knows what you're showing, without having to squint to
read the labels.</p>
<a href=
"http://scienceblogs.com/principles/2008/03/tips_for_speakers.php">Read
the rest of this post...</a> | <a href=
"http://scienceblogs.com/principles/2008/03/tips_for_speakers.php#commentsArea">
Read the comments on this post...</a><img src=
"http://feeds.feedburner.com/~r/scienceblogs/uncertainprinciples/~4/250769067"
height="1" width="1" />]]></content></entry><entry><title type="html"><![CDATA[Chad Orzel: Headline Mismatch]]></title><link href="http://feeds.feedburner.com/~r/scienceblogs/uncertainprinciples/~3/250716799/headline_mismatch.php"/><id>http://feeds.feedburner.com/~r/scienceblogs/uncertainprinciples/~3/250716799/headline_mismatch.php</id><updated>2008-03-13T12:51:43Z</updated><author><name>Chad Orzel</name></author><summary type="html"><![CDATA[<p>We live in a short-attention-span age. I have a huge array of
feeds spewing information at me like the proverbial firehose, so I
often don't do more than look at the headline and RSS excerpt, and
I don't think I'm alone.</p>
<p>Given that, it's more important than ever that the headlines
given to articles actually, you know, <strong>match the
contents</strong>. For example, when I see a story in the <cite>New
York Times</cite> headlined <a href=
"http://www.nytimes.com/2008/03/13/washington/13enviro.html?_r=1&amp;ei=5088&amp;en=02956ef8af118615&amp;ex=1363147200&amp;adxnnl=1&amp;oref=slogin&amp;partner=rssnyt&amp;emc=rss&amp;adxnnlx=1205407284-bxjmI94vNFPvd/igFmxKVA">
Environmental Agency Tightens Smog Standards</a>, I would like this
to accurately reflect the contents of the story. When the first
sentence of the story is:</p>
<blockquote>
<p>The Environmental Protection Agency announced a modest
tightening of the smog standard on Wednesday evening, overruling
the unanimous advice of its scientific advisory council for a more
protective standard.</p>
</blockquote>
<p>I feel like I've been misled by the people writing the
headlines. The headline is factually accurate, but nearly the
opposite of the actual story in terms of connotation.
"Environmental Agency Tightens Smog Standards" makes me think "Yay,
progress!" while the story is yet another in a long litany of
stories about political hacks ignoring or overriding scientific
expertise.</p>
<a href=
"http://scienceblogs.com/principles/2008/03/headline_mismatch.php">Read
the rest of this post...</a>