(PhysOrg.com) -- Four theoretical physicists, led by Allan Widom, of Northeastern University, have published a paper in arXiv, where they show a possible way for some bacteria to produce radio waves. Taking note of the fact that bacteria DNA forms in loops rather than the familiar helix seen in humans, Widom, et al, describe a process whereby free electrons that flow through such a loop by hopping from atom to atom, wind up producing photons when energy levels change.
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Feed SubscriptionAnimal emotion: When objectivity fails
There seems to be an explosion of concern over animal welfare these days. With growing awareness to factory farming conditions, Americans are at last faced with the recent histories of their burgers, their nuggets, their pork chops
Read More »Control Yourself! How to Keep Cravings in Check (preview)
Most of us start out with the best of intentions. Then we walk right past the fruit bowl in search of the devil’s food cake.
Read More »EU to build most powerful laser ever in Prague
(PhysOrg.com) -- As part of the European Union's commitment to remaining at the forefront of technology, the European Commission (the governing body of the European Union) has laid out plans for three initial high powered lasers to be built in Eastern Europe with a fourth to come at a later date. The first superlaser in the project is to be built near Prague, with a goal of achieving exawatt class, which would make it at least a hundred times more powerful than anything that exists today.
Read More »AMS particle detector heads for the International Space Station
(PhysOrg.com) -- The AMS particle detector will take off on 29 April 2011 at 21.47 CEST onboard the very last mission of the space Shuttle Endeavour.
Read More »A journey inside the ‘Cave of Forgotten Dreams’ with Werner Herzog [Video]
As a filmmaker--albeit for the very small screen rather than the very large one--it was my supreme pleasure to interview legendary director Werner Herzog ( Grizzly Man, Rescue Dawn ) about his latest film Cave of Forgotten Dreams . Herzog's first foray into 3-D, the movie takes viewers on a journey through the Chauvet-Pont d'Arc Cave in the South of France, which contains perfectly preserved charcoal drawings, many of which date to 30,000 years ago. [More]
Read More »Your Brain on Jazz: Visualizing Creativity [Video]
Charles Limb, a hearing and ear surgeon at Johns Hopkins University School of Medicine, studies jazz as a means of understanding what goes on "under the hood" when a musician is improvising.
Read More »Inner Spark: Using Music to Study Creativity (preview)
For a limited time, the full text of this article is being made available for fans of Scientific American's page on Facebook. Read it now or become a fan
Read More »The shuttle program counts down ’til the end
KENNEDY SPACE CENTER--If I'd jumped, I could have touched the belly of the Discovery. Of course, I would have then been escorted unceremoniously from the Orbiter Processing Facility. But I was that close.
Read More »Death of the birthers?
The birth certificate in all its long-form glory has been revealed to a panting public. And so even the most hardcore so-called birther will now acknowledge that Barack Obama is legally entitled to serve as President of the United States, right
Read More »Physics tricks could make for one-way soundproofing
One-way mirrors, which many of us know from watching police procedurals on TV, seem a bit magical--how does the mirror know which light to let through and which to reflect? The truth is, it doesn't. The one-way mirror and its smaller cousin, the mirrored sunglass lens, rely on lighting imbalances for efficacy.
Read More »Armadillos Likely Transmitting Leprosy to Humans in Southern U.S.
Leprosy was one of the last things on dermatologist John Abide 's mind when a 78-year-old man walked in for a screening at the doctor's Greenville, Miss., practice. Unbeknownst to the man, two large red bumps had formed on his back.
Read More »Surreptitious Sleep States Uncovered
By Virginia Gewin of Nature magazine The closed eyes, the unresponsiveness, the drool--sleep is an easily recognizable, all-encompassing state.
Read More »Researchers create terahertz invisibility cloak
Researchers at Northwestern University have created a new kind of cloaking material that can render objects invisible in the terahertz range.
Read More »Researchers take a step toward valleytronics
Valley-based electronics, also known as valleytronics, is one step closer to reality. Two researchers at the Naval Research Laboratory (NRL) have shown that the valley degree of freedom in graphene can be polarized through scattering off a line defect. Unlike previously proposed valley filters in graphene, which rely on confined structures that have proven hard to achieve experimentally, the present work is based on a naturally occurring line defect that has already been observed.
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