Science
drorzel | January 5, 2010"Slow light" is in the news again. The popular descriptions of the process usually leave a lot to be desired, so let's see if we can't do a slightly better job of explaining what's going on. The key idea is using one light beam to control the transmission of another.
Let's say you have a bunch of atoms in a gas and a laser. The laser happens to be at exactly the right frequency to be absorbed by the atoms, meaning that if you try to shine the laser through the gas, it'll be absorbed, and won't make it out the other side. This is traditionally represented by a diagram like to one to the right…
drorzel | January 5, 2010Over at Cosmic Variance, Sean's been taking a beating over his negative comments on an atheist anti-Christmas sign. There's no small irony in this, given that Sean is a vocal atheist. His sentiments, which basically boil down to "it's good to promote atheism, but there's no need to be a dick about it" strike me as perfectly unobjectionable, but as he's learning first-hand, that's not enough for a lot of people on the Internet.
The difference between an unjustly accused "accommodationist" like Sean and a real one like myself is here:
The problem with accommodationism isn't that its adherents…
oracknows | January 4, 2010Over the holidays, I stayed at home for a combination of some relaxation and some grant writing. (I know, weird.) As I was perusing some of the links I saved during that time, it occurs to me that I totally forgot about one particularly amazing bit of hilarity, courtesy of our old "friend" Deepak Chopra. Given that it was over a week ago, it's probably not worth going into the full Orac mode on it any more, old news and all, but I couldn't let it go completely unremarked upon because it's just so amazingly, hysterically funny. Appearing two days after Christmas, Chopra's post was entitled Woo…
catdynamics | January 4, 2010The annual AAS meeting opened up with the award of the van Biesbroeck Prize of the society to Father Dr George Coyne, former director of the Vatican Observatory.
The van Biesbroeck Prize is for extraordinary service to astronomy, in particular his role organizing the Vatican Observatory Summer Schools, and the role he has played at the juncture of science and religion.
A topic that occasionally stirs sciencebloggers, and their readers, from torpor.
Dr Coyne gave a brief and gracious speech, but touched on what I thought was a bit of a strawman: he appealed, and I paraphrase, for people to…
catdynamics | January 4, 2010liveblogging the AAS...
It is freezing in DC, but at the Marriott hotel across from the National Zoo the action is hot and heavy as 3000+ astronomers swarm to the annual meeting of the American Astronomical Society.
This is for the 7 astronomers who phoned it in, literally in one case, you know who you are.
Or, in case you got stuck in the exhibit hall lobby at 9:17 this morning and never found your way out of the basement again. Hope the WiFi signal is holding up down there.
There is a flurry of new results, though through some freudian mishap I just typed "flurry on few results" instead…
oracknows | January 4, 2010Heh. Leave it to xkcd to sum it up perfectly:
(Click for full comic)
You know, I happen to love CSI:Miami as much as the next guy. In fact, it's one of my guilty TV pleasures. But any time there's a lab scene on that show (or any of the other CSI shows) it cracks me up. Beautiful people in pristine white lab coats delivering DNA sequences in an hour! Loud rock music blaring over cuts so fast that they induce seizures and would be considered too hyperactive even for a music video or a Michael Bay movie. Multi-colored Eppendorf tubes back lit so that they glow. These sorts of scenes have…
grrlscientist | January 4, 2010
Who: Richard Wiseman
What: free public presentation, "Investigating the Impossible"
Where: University Settlement, 184 Eldridge Street (and Rivington St.) [map]
When: tomorrow at 730pm (Tuesday, 5 January 2010)
Cost: FREE and open to the public!
Join the New York City Skeptics as they kick off their 2010 Public Lecture Series with noted skeptic, psychologist, and magician Richard Wiseman.
For over 20 years, Professor Richard Wiseman has investigated a variety of strange psychological phenomena. In this talk, he describes some of his more colorful adventures, including his work into why…
awild | January 4, 2010
Paraneuretus (Formicidae:Aneuretinae), photo by ebay seller rmvveta
Here's something unusual for the well-financed collector: Paraneuretus, an extinct genus from a nearly extinct subfamily of ants. This pair of fossilized worker ants is selling on ebay today for over $400. Out of my budget for these sorts of things.
Most amber ants up for auction belong to common extinct species: Azteca, Tapinoma, Camponotus and so forth, usually from the Dominican or Baltic amber deposits and pertaining to extant genera. This is the first aneuretine I've seen.
What's interesting about these ants? Well,…
drorzel | January 4, 2010Let's say you have some liquid that you want to contain without leaks, say, milk for a baby. What do you do?
Well, you put it in something like a baby bottle, the components of which are shown here:
You have a hard plastic bottle, a soft silicone nipple, and a hard plastic ring that screws onto the bottle. When you put it together and screw the cap down tight, it compresses the silicone between the two plastic bits, squeezing it into the small gaps, and plugging any leaks. Done properly, this will ensure that milk doesn't leak out of the bottle except through the whole in the nipple.
Now,…
pharyngula | January 4, 2010Why? Because you must explain how mitosis works…using Krispy Kremes.
Make sure they understand the chemistry of fats and carbohydrates first!
drorzel | January 4, 2010Today is the first day of classes, and to celebrate, I've come down with the Martian death virus that Kate and SteelyKid have had the last few weeks. Joy.
This calls for a How to Teach Physics to Your Dog update, to distract myself from the cotton balls and vacuum pump oil that have apparently been stuffed into my sinuses:
The primary news is that Peter Woit has posted a review, in which he says mostly good things:
While Brian Greene in his Elegant Universe Nova special introduced general relativity by trying to discuss it with a dog, concluding that "No matter how hard you try, you can't…
awild | January 3, 2010The classic '80s video from Thomas Dolby:
I'm still not sure what it means. But I do hope they keep a room for me at the Home for Deranged Scientists.
bioephemera | January 3, 2010
To follow up on my previous review of KC Cole's book about the Exploratorium, here's a nifty exhibit called "How People Make Things." It's a traveling exhibit (by the Children's Museum of Pittsburgh, not the Exploratorium) that demonstrates the basics of manufacturing processes like injection molding and assembly.
It's interesting to compare the experience you may imagine having in the exhibit room above to the experience of the website, which uses a one-directional lecture mode (warning: be prepared for the Mr. Rogers cameo). It's ironically difficult to successfully translate hands-on…
catdynamics | January 3, 2010PSU Prof. Mike Gooseff liveblogs from the Antarctic...
Gooseff on the Ice
liveblog from an antarctic expedition, primary audience is a Kindegarten and 2nd grade class in State College.
It is very cool...
Apparently the McMurdo station just held "Icestock", with headline funk band "Porn Spill" leading the lineup, starring Stix Dickson on the drums.
From Icestock 2008.
Porn Spill 2007 - Play that funky music boys.
Icestock 2006
and the Make Out Party of '06.
Hm, better than the morose folk songs we used to get from the foreman in working camps up in Iceland...
grrlscientist | January 3, 2010tags: Birdbooker Report, bird books, animal books, natural history books, ecology books
"How does one distinguish a truly civilized nation from an aggregation of
barbarians? That is easy. A civilized country produces much good bird
literature."
--Edgar Kincaid
The Birdbooker Report is a special weekly report of a wide variety of science, nature and behavior books that currently are, or soon will be available for purchase. This report is written by one of my Seattle birding pals and book collector, Ian "Birdbooker" Paulsen, and is edited by me and published here for your information and…
drorzel | January 3, 2010Over at Faraday's Cage, Cherish has a very nice post on Fourier series, following on an earlier post on Fourier transforms in the Transformers movie. She gives a nice definition of the process in the earlier post:
A Fourier Transform takes a signal and looks at the waves and then shows us the frequencies of all the waves. If we only have a single sine wave, like above, we will have a frequency that is zero everywhere except for the frequency of that sine wave. More complicated signals will be made up of several of these different frequencies and thus will have several peaks. The idea is that…
drorzel | January 2, 2010In talking to a reporter about How to Teach Physics to Your Dog on Wednesday, I learned of a mistake in the text of the book-- a footnote on page 71 says that Scientific American published an article on how to make your own "quantum eraser" in April 2007, when in fact it was May 2007.
If that's the worst mistake in the published book, I'll be very happy. It is a mistake, though, and needs to be corrected. This also reminded me that I never did post the scholarly references that go with the book, so maximizing the birds killed per stone, I have added a References and Errata page to DogPhysics.…
bioephemera | January 2, 2010
"the whole point of the Exploratorium is for people to feel they have the capacity to understand things." --Frank Oppenheimer
I admit it: I'd never heard of Frank Oppenheimer until I received my review copy of K.C. Cole's Something Incredibly Wonderful Happens: Frank Oppenheimer and the world he made up. I thought for a day or two that it was a book about Robert Oppenheimer, the so-called "Father of the Atomic Bomb," and was thus completely befuddled by the book's cheery title and its cover - a fanciful cloud of iridescent bubbles.
Of course, I was off by a sibling. Frank Oppenheimer was…
rallain | January 2, 2010I have been meaning to write about this for quite some time. Really, I wanted to reply to Chad's article on science at Uncertain Principles, but you know how things go. So, here are my key and interesting points about science in random order.
Science is all about models (not ball bearings)
Science is about making models. What is a model? A model can be lots of things. It can be a mathematical relationship, a conceptual model, or even a physical model. One model I like to use is static friction. For many cases, the frictional force can be modeled as:
This model says the frictional…
bioephemera | January 2, 2010Oh noes! Chris Mooney just used the phrase "scientific consensus on global warming" in a WaPo article on Climategate:
While the controversy has receded, it may have done lasting damage to science's reputation: Last month, a Washington Post-ABC News poll found that 40 percent of Americans distrust what scientists say about the environment, a considerable increase from April 2007. Meanwhile, public belief in the science of global warming is in decline.
The central lesson of Climategate is not that climate science is corrupt. The leaked e-mails do nothing to disprove the scientific consensus on…