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Physicists cool semiconductor by laser light

Researchers at the Niels Bohr Institute have combined two worlds – quantum physics and nano physics, and this has led to the discovery of a new method for laser cooling semiconductor membranes. Semiconductors are vital components in solar cells, LEDs and many other electronics, and the efficient cooling of components is important for future quantum computers and ultrasensitive sensors. The new cooling method works quite paradoxically by heating the material

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It’s a Small World: Kepler Spacecraft Discovers First Known Earth-Size Exoplanets

NASA's Kepler spacecraft is starting to put the pieces together in its search for virtual Earth twins in other planetary systems. Kepler, which launched in 2009 , is on the lookout for planets that are about the size of Earth and have temperate surface conditions. One half of that formula was realized on December 5 when mission scientists announced the discovery of a planet in the so-called habitable zone, called Kepler 22 b , a few times larger than Earth

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Physicists unveil a theory for a new kind of superconductivity

(PhysOrg.com) -- In this 100th anniversary year of the discovery of superconductivity, physicists at the University of Massachusetts Amherst and Sweden’s Royal Institute of Technology have published a fully self-consistent theory of the new kind of superconducting behavior, Type 1.5, this month in the journal Physical Review B.

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Nobelist Kroto: What’s The Evidence For What You Accept?

Harold Kroto won the Nobel Prize in chemistry in 1996 for the discovery of buckminsterfullerene, the soccer ball shaped form of carbon better known as buckyballs. On June 28, he spoke to students [at the Lindau Nobel Laureates meeting] about science as a philosophical construct: "I'm going to talk about what science is because it's a totally misunderstood sort of subject

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NIST debuts online museum of quantum voltage standards

On April 8, 2011, the scientific community will celebrate the centennial of the discovery of superconductivity—the ability of certain materials to conduct electricity without resistance when cooled below a specific temperature.

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In a Scrape: Seafloor Trawling Threatens Deep Ocean Species

Dear EarthTalk : Recent news reports have revealed the discovery of previously unknown species inhabiting the deepest parts of our oceans. Is anything being done to protect this habitat before humans have a chance to fish it to death or otherwise destroy it? --Matthew Polk, Gary, Ind.

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Virtual Archaeology at Stonehenge [Video]

Theories about Stonehenge have historically tended to regard it as a stand-alone monument. But an increasingly well-supported view holds that Stonehenge was just part of a much larger ceremonial landscape, as this article in the March issue of Scientific American explains

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