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Anatase
(Preview)
Scientists are hot on the trail of materials that use light to break down contaminants for environmental cleanup or split water for hydrogen fuel production. With a splash of UV light, titanium dioxide can do just that, but researchers would like to expand its repertoire to use visible light. Dopin...
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Substitutional alloy
(Preview)
What has been impossible has now been shown to be possible - an alloy between two incompatible elements. The findings are being published in this week's edition of Proceedings of the National Academy of Science, USA. A research team led by Professor H.K. Mao from Carnegie Institution of Washington...
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Laser-powered spacecraft
(Preview)
Nearly a decade ago, Leik Myrabo shared with Scientific American readers his vision for the future of space travel: a "LightCraft" pushed out to the stars by a pulsed infrared laser beam from the ground or pulled into space by a laser beamed down from a solar-powered station orbiting Eart...
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The hidden order
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This quotation is from Professor Peter Oppeneer of Uppsala University. Together with three colleagues, he has explained the hitherto unsolved mystery in materials science known as 'the hidden order' - how a new phase arises and why. This is a discovery that can be of great importance to our underst...
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Hawking-like radiation
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Title: Hawking-like radiation as tunnelling from the apparent horizon in a FRW Universe Authors: Tao Zhu, Ji-Rong Ren, Douglas Singleton We study Hawking-like radiation in a Friedmann-Robertson-Walker (FRW) universe using the quasi-classical WKB/tunnelling method which pictures this pro...
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Photon-Axion-Like Particle Coupling Constant
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Title: Photon-Axion-Like Particle Coupling Constant and Cosmological Observations
Authors: M. Yu. Piotrovich, Yu. N. Gnedin, T. M. Natsvlishvili
We estimated the photon-pseudoscalar particle mixing constant from the effect of cosmological alignment and cosmological...
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Boron
(Preview)
B80, boron buckyball A new study by Rice University scientists predicts the existence and stability of another "buckyball" consisting entirely of boron atoms. The research, which has been published online and is due to appear as an editor's selection in Physical Review Letters, was c...
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Holographic Principle
(Preview)
Like a Hologram, the Universe Merely Appears to Have Three Spatial Dimensions.
In quantum physics, nothing is as it seems. As physicists continue to study the universe they continually run into new questions that shake how humans understand the universe's intricate mechanics.
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PS3 Gravity Grid
(Preview)
When black holes are perturbed, they vibrate somewhat like a ringing bell. Now astronomers have narrowed down the rotational speed at which that vibration should stop. As is typical, they did it out by running a simulation. But instead of a supercomputer, they used a batch of Sony PlayStation 3 gami...
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Thermometer
(Preview)
Physicists have invented an electronic thermometer that ties temperature directly to a fundamental number--namely, the Boltzmann constant, a value related to the kinetic energy of molecules. (The constant is typically abbreviated in high school chemistry as k or kB.) The device centers on the...
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Monte Carlo method
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Monte Carlo methods are a class of computational algorithms that rely on repeated random sampling to compute their results. Monte Carlo methods are often used when simulating physical and mathematical systems. Because of their reliance on repeated computation and random or pseudo-random numb...
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Mirror
(Preview)
Mathematician Andrew Hicks was in his Drexel University office, puzzling over some problem he can no longer recall, when colleague Ron Perline walked in with a challenge. Fresh from his morning bicycle ride, Perline was unhappy with the rearview mirror mounted on his handlebars. Its tiny surface...
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Hardy's paradox
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University of Toronto quantum physicists Jeff Lundeen and Aephraim Steinberg have shown that Hardy's paradox, a proposal that has confounded physicists for over a decade, can be confirmed and ultimately resolved, a task which had seemingly been impossible to perform. "For nearly a centur...
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Vedic Mathematics
(Preview)
When a suggestion was made some time ago that Vedic Mathematics should be introduced as a subject for study at the college level in India, there was a lot of derisive laughter among some of our pseudo-intellectuals, not to speak of ‘secularists’ whose knowledge of Sanskrit was questionable and a sen...
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Paper Folding Problem
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Britney Gallivan has solved the Paper Folding Problem. This well known challenge was to fold paper in half more than seven or eight times, using paper of any size or shape. In April of 2005 Britney's accomplishment was mentioned on the prime time CBS television show Numb3rs. The task was commonly kn...
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