Scientists explain the ‘Cheerio Effect’ or why floating things tend to clump together

From MSNBC News:Cereal_vmed

You may or may not have pondered why your breakfast cereal tends to clump together or cling to the sides of a bowl of milk. Now there is an easy explanation. Dubbed the Cheerio Effect by scientists, this clumping phenomenon applies to anything that floats, including fizzy soda bubbles and hair particles in water after a morning shave. Dominic Vella, a graduate student now at Cambridge University, and L. Mahadevan, a mathematician from Harvard University, decided to change that. In a study that appears in the Sept. 15 issue of the American Journal of Physics, Mahadevan explains the Cheerio Effect using three basic concepts from physics: buoyancy, surface tension and the meniscus effect.

More here.



Wednesday, September 21, 2005

Hitchen vs. Galloway: The Jungle in the Rumble

From The Guardian (with a link to a video of the event at the bottom of the article, not to be watched while eating or shortly after having eaten):

“What had been billed as ‘the grapple in the Big Apple’ in the end owed more to pugilism than polemics, with jibes, like jabs, missing more often than they landed, and many a blow below the belt.

Hitchens berated Galloway for his ‘sinister piffle’, congratulating him on ‘being 100% consistent in [his] support for thugs and criminals’ and declaring: ‘The man’s search for a Fatherland knows no ends.’ Galloway branded Hitchens a hypocrite and ‘a jester at the court of the Bourbon Bushes’. Describing Hitchens’ journey from the left to the right, Galloway said: ‘What we have witnessed is something unique in natural history. It’s the first metamorphosis of a butterfly back into a slug.’ In the heat of battle the fact that butterflies come from caterpillars did not temper the applause from the audience, roughly two-thirds of whom backed Galloway.

Having both torched the moral high ground, they would both later claim it as their own. At one point Galloway told Hitchens ‘Your nose is growing,’ only to deride his opponent for his ‘cheap demagoguery’. Hitchens scolded the jeering audience for their ‘zoo-like noises’, only to say that Galloway’s ‘vile and cheap guttersnipe abuse is a disgrace’.

In a debate that drew as much from the culture of the playground as the traditions of parliament, no hyperbolic stone was left unturned.”

Or unthrown for that matter. 

Nazi Hunter Simon Wiesenthal Dies at 96

Adam Bernstein in the Washington Post:

Ph2005092000596Simon Wiesenthal, 96, the controversial Nazi hunter who pursued hundreds of war criminals after World War II and was central to preserving the memory of the Holocaust for more than half a century, died early today at his home in Vienna, Austria. He had a kidney ailment.

Called the “deputy for the dead” and “avenging archangel” of the Holocaust, Wiesenthal after the war created a repository of concentration camp testimonials and dossiers on Nazis at his Jewish Documentation Center. The information was used to help lawyers prosecute those responsible for some of the 20th century’s most abominable crimes.

Wiesenthal spoke of the horrors first-hand, having spent the war hovering near death in a series of labor and extermination camps. Nearly 90 members of his family perished.

More here.

Egypt’s Elections

Joshua Hammer & Christine Spolar in The New Republic:

…yet, for all its problems, the election may have created momentum for democratic reform that the Mubaraks will have trouble stopping. Cafés have been alive with talk of politics, and the strategies adopted by the pro-democracy forces–such as challenging the regime’s election commission for the right to place independent monitors in polling stations–were closely watched. Monitors ended up having to negotiate their way into the polls, but they were surprisingly successful in many instances. And they gained valuable tools for the next go-round. Ayman Nour–the charismatic 40-year-old former parliamentarian whose arrest earlier this year prompted protests from the Bush administration–came in second with 7 percent of the vote, thus emerging as the leader of the nascent opposition. Nour’s campaign was low-budget and wildly disorganized. But his message–he attacked ruling party corruption and called for a repeal of the repressive Emergency Laws, enacted after the 1981 assassination of Anwar Sadat–grew bolder as the weeks progressed. Equally important, the campaign changed public perceptions of Mubarak. “Before, Mubarak was seen as a God–detached, unreachable,” says Negad El Borai, a human rights attorney and member of a pro-democracy group that sought to monitor the presidential elections. “Now the God is being forced to travel to the provinces, asking people to give him their vote. It’s a sea change in Egyptian politics.”

More here.

Do You Know the Way to Dr. Dre?

From Casa del Ionesco:

What the world needs now: a Burt Bacharach/Dr. Dre collaboration?

from The Independent

Once the world’s smoothest crooner, Burt Bacharach is now collaborating with Dr. Dre and attacking President Bush. He tells John Walsh why he’s swapped easy-listening for tough-talking:
more

Good article but one minor quibble: Burt is the Sultan of Songwriters, not to mention the undisputed Emperor of Easy, but his crooning is only marginally smoother than the use of sandpaper as a facial exfoliant: that’s why Dionne, Dusty, Tom, Gene, Perry, Jack et alia were let loose on those melifluous melodies. Burt’s exquisitely sophisticated arrangements even made Cilla sound good, though they failed to elevate his own resolutely earthbound vocals. As a songwriter… Burt’s natural habitat is more Mount Olympus than Hasbrook Heights but as a crooner… hell, he’s just another Icarus in diving boots.

More here.

Second thoughts on leap seconds

From CNN:

The Royal Astronomical Society on Wednesday called for a public debate on the proposed abolition of leap seconds, a tiny end-of-year adjustment to keep clocks in synch with the earth’s rotation.

The International Telecommunications Union will meet in Geneva in November to debate a proposal to abolish leap seconds after 2007.

Mike Hapgood, secretary of the Royal Astronomical Society, said the debate has practical implications for computers, global positioning systems and for those who study phenomena — such as tides — that are related to the earth’s rotation.

There have been 21 leap seconds since they were introduced in 1972, and the next is planned for the end of 2005.

Dan Chiasson

Here Follows an Account of the Nature of Birds

Here Follows an Account of the Nature of Fish.
Here follows a description of an unknown town.
Here follows the phoenix-flight from human eyes.
Here follows the friendship fish and langouste.
All the marvels of erotic danger follow here.
Here follows the phone number of a dead person.
Here follows a game based on perfect information.
Five minutes have passed since I wrote this line.
I mistook my baby’s cry for the radiator hiss.
Here follows the address of a place to buy cocaine.
Big sadness come your way, sunrise, skyline.
Let’s do it some new way next time we try.
Do you have anything you can put inside me?
Here Follows an Account of the Nature of Birds.

from Dan Chiasson’s Five Poems at The Paris Review.

Sartre and Beauvoir

Ill_159

Sartre and Beauvoir had met in Paris in 1929, when he was twenty-four, she was twenty-one, and both were studying for the agrégation, the competitive examination for a career in the French school system. Beauvoir was a handsome and stylish woman, and she had a boyfriend, René Maheu. (It was Maheu who gave her her permanent nickname, le Castor—the Beaver.) But she fell in love with Sartre, once she got over the physical impression he made. Sartre was about five feet tall, and he had lost almost all the sight in his right eye when he was three; he dressed in oversized clothes, with no sense of fashion; his skin and teeth suggested an indifference to hygiene. He had the kind of aggressive male ugliness that can be charismatic, and he wisely refrained from disguising it. He simply ignored his body. He was also smart, generous, agreeable, ambitious, ardent, and very funny. He liked to drink and talk all night, and so did she.

more from Louis Menand at the New Yorker here.

Chatting Up Cells: Nano reservoirs on a chip tell stem cells what to do

From Scientific American:Nano

Stem cells can transform into whatever cell the body tells them to. Unfortunately, scientists have yet to master that particular gift of gab. But investigators at Stanford University may soon crack the language with tiny “chat rooms” for stem cells. In their natural milieu, stem cells have a variety of neighbors that pass on chemical messages at exact spots at particular times in specific amounts to guide the cells’ development into a given cell type. In today’s laboratory, however, researchers often bathe the whole cell with chemicals–kind of like out-of-control beer keggers compared with the sophisticated cocktail parties the body normally throws for stem cells. To uncover the mostly unknown placement, timing and identity of the cues, Stanford materials scientist Nicholas A. Melosh and his colleagues are re-creating the niche where stem cells normally dwell. They are developing a microscopic lab on a silicon chip that surrounds a stem cell with as many as 1,000 cavities, each 500 nanometers wide.

More here.

Male weevils give females the gift of youth

From Nature:Weevil

Ever think your spouse is turning you grey before your time? Well things are very different for a beetle being studied by Swedish evolutionary biologists. They have found that some male bean weevils can slow down the ageing process in their mates simply by having sex with them. Female weevils (Acanthoscelides obtectus) live longer when mated with males that have been bred to reproduce later in life, report researchers at Uppsala University. By supplying a cocktail of age-defying chemicals with their sperm, the males stop their mates dying off before they have had the chance to produce a large family. “The males are promoting their own selfish interests by being the good guys in this case,” explains Göran Arnqvist, a member of the study team. “It benefits males if their mates live longer.”

More here.

Tuesday, September 20, 2005

Island Floating around the Island

2005_09_floating

Speaking of the James Cohan gallery (previous post), they are invloved, along with The Whitney and others, in finally realizing Robert Smithson’s dream of having a tugboat carry an island around the island of Manhattan. Links to various articles and so forth can be found here.

And here‘s something from New York Magazine:

New Yorkers enjoy the unexpected gesture, the extravagant folly, the existential leap. This fall, Minetta Brook (a nonprofit arts organization) and the Whitney Museum will realize a whimsical idea of this kind by the earthworks artist Robert Smithson. In a drawing made in 1970, three years before his death, Smithson conjured up a ‘floating island’ that would circle the fixed island of Manhattan like a slow-moving planet. Built on a barge and pulled by a tugboat, it consisted of a tailored landscape of rocks, trees, and pathways. It looked like something carved from Central Park.

Bill Owens

Picksimg_2

Occupying the territory between Lee Friedlander’s formal elegance and Gregory Crewdson’s over-the-top American Gothic, Bill Owens has been using photography to pry into the American psyche for almost four decades. This show includes work from his best known series—”Suburbia,” 1972, “Our Kind of People,” 1976, “Working, I do it for the money,” 1978, and “Leisure,” 2004—as well as unpublished photographs from the late ‘60s that point toward Larry Clark’s vision of debauched American youth.

more from Artforum here.
a link to the James Cohan gallery where the Owens exhibit can be found is here.

Niebuhrism

Arthur Schlesinger, Jr., writes in this week’s NYTBR:

In the midst of this religious commotion, the name of the most influential American theologian of the 20th century rarely appears – Reinhold Niebuhr. It may be that most “people of faith” belong to the religious right, and Niebuhr was on secular issues a determined liberal.

Schlesinger asks if we are “Forgetting Reinhold Niebuhr.” As usual, on political issues my friend Alan Koenig already had a bead on this some time ago. Here’s an excerpt from his Beliver essay “Where are the Real Niebuhrians?”:

In noting America’s unease and odd naïveté in wielding power for universal ideals, Niebuhr cautioned that, “Consistent with the general liberal hope of redeeming history, the American Messianic dream is vague about the political or other power which would be required to subject all recalcitrant wills to the one will which is informed by the true vision.”

In the present circumstances, something about that seems awfully timely.

First View Of Many Neurons Processing Information In Living Brain

From Harvard Magazine:Neurons

Harvard Medical School researchers have applied a new microscopy technique in a living animal brain that for the first time reveals highly sophisticated time-lapse images of many neurons coordinating to produce complex patterns of activity. The approach will open up new avenues for analyzing neurodegenerative diseases and other aspects of the brain. “Put simply, this technique allows us to see the brain seeing,” said R. Clay Reid, HMS professor of neurobiology, a member of the HMS Systems Neuroscience initiative, and principal investigator on the project. “It’s an entirely new way of looking at brain function.”

The method, the first to track the responses of all the neurons in a visual circuit simultaneously, promises to rapidly advance our understanding of how the brain is wired for complex image processing. Lessons learned by studying the visual system may eventually apply to other brain functions like movement, thinking, and learning, as well as neurodegenerative diseases.

More here.

Almost Before We Spoke, We Swore

From The New York Times:Curse

Incensed by what it sees as a virtual pandemic of verbal vulgarity issuing from the diverse likes of Howard Stern, Bono of U2 and Robert Novak, the United States Senate is poised to consider a bill that would sharply increase the penalty for obscenity on the air. Yet researchers who study the evolution of language and the psychology of swearing say that they have no idea what mystic model of linguistic gentility the critics might have in mind. Cursing, they say, is a human universal. Young children will memorize the illicit inventory long before they can grasp its sense, said John McWhorter, a scholar of linguistics at the Manhattan Institute and the author of “The Power of Babel,” and literary giants have always constructed their art on its spine.

More here.

Sunday, September 18, 2005

Afghanistan: A woman’s Place

Aryn Baker in Time Magazine:

Nearly four years after the U.S.-led coalition overthrew the Taliban, Afghanistan is still stumbling on the path to peace and stability. The country is nowhere near as violent as it was before; it has a new constitution that enables the establishment of civil institutions like an independent judiciary; and foreign investment is trickling in. Outside the capital Kabul, however, much of the hinterland remains poor and lawless, often controlled by rival warlords and drug barons who do not answer to the central authorities. The presidential election that Hamid Karzai won last year should have given the divided country a unifying leader. But Karzai has been hamstrung by the lack of a parliament or local government bodies, and many Afghans derisively call him “mayor of Kabul.”

Afghanistan will only become a true democracy when citizens can turn for help to locally elected leaders, rather than armed warlords. That’s why this week’s polls are potentially so important.

More here.

The Real Crime: 1,000 Errors in Fingerprint Matching Every Year

From LiveScience.com:

Ls_generic_fingerprint_01Nobody knows how many people sit wrongfully convicted in prison due to errors in fingerprint matching. But a new study suggests there could be a thousand or more unknown identification errors a year in the United States.

Criminologist Simon Cole of the University of California at Irvine examined all 22 known cases of fingerprint mistakes made since 1920.

Most of the 22 cases were revealed only through “extremely fortuitous circumstances,” such as a post-conviction DNA test, the intervention of foreign police and in one case a deadly lab accident that led to the re-evaluation of evidence, Cole said today.

One highly publicized example was the case of Brandon Mayfield, a Portland lawyer held for two weeks as a suspect in the Madrid train bombings in 2004. FBI investigators matched prints at the scene to Mayfield, and an independent examiner verified the match. But Spanish National Police examiners insisted the prints did not match Mayfield and eventually identified another man who matched the prints.

The FBI acknowledged the error and Mayfield was released.

Cole thinks the high-profile cases are the tip of an iceberg of wrongfully accused, cases that are sometimes swept under the rug or lead to convictions. Other studies have shown an error rate of 0.8 percent in matching prints. Multiplied across all cases processed by U.S. crime labs in 2002, that would b e 1,900 mistaken fingerprint matches.

More here.

The world’s 10 biggest ideas

From New Scientist:

Certain questions define the way we see the world. How did the universe begin? What is matter made of? What shaped our planet? How did the amazing diversity of life arise? We take many of the answers for granted, but maybe we shouldn’t.

When we asked 10 of the biggest names in science to explain the significance of their discipline we were surprised by their response: who would have thought understanding quantum theory was relevant to the abortion debate? Or that a diamond ring can take you back to Pangaea? Set your mind spinning with our guide to the World’s 10 Biggest Ideas…

1. The big bang

2. Evolution

3. Quantum mechanics

4. The theory of everything

5. Risk

6. Chaos

7. Relativity

8. Climate change

9. Tectonics

10. Science