Tuesday , October 16 2018

Physics

Extreme Pressures and Temperatures Turn Nitrogen Metallic

New research indicates that nitrogen, one of the most-common elements in the Universe and the dominant gas in the atmosphere of Earth, becomes a metallic fluid when subjected to the extreme pressure and temperature conditions found deep inside the Earth and other planets. Nitrogen is most-commonly bonded with itself in …

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Researchers Develop World’s Fastest Nanomechanical Rotor

At more than 60 billion revolutions per minute, a nanomechanical rotor developed by Purdue University researcher Tongcang Li and co-authors is more than 100,000 times faster than a high-speed dental drill. Ahn et al levitated a nanoparticle in vacuum and driven it to rotate at high speed, which they hope …

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Measuring Temperature of Schrödinger’s Coffee

A new uncertainty relation, linking quantum mechanics and the precision with which temperature can be measured, has been discovered by University of Exeter theoretical physicists Janet Anders and Harry Miller. How hot is Schrödinger’s coffee? Image credit: Myriams Fotos / Wynn Pointaux / Sci-News.com. “If you measure the temperature of …

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CERN Physicists Observe Lyman-alpha Transition in Antihydrogen

Physicists from the ALPHA Collaboration at CERN have detected the Lyman-alpha transition — when the hydrogen electron transitions between the lowest-energy (1S) level and the higher-energy (2P) level, emitting or absorbing ultraviolet light of 121.6 nm wavelength — in the antihydrogen atom, the antimatter counterpart of hydrogen. Artist’s impression of …

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CERN Physicists Discover Two New Particles

Physicists from CERN’s Large Hadron Collider beauty (LHCb) experiment have found two never-before-seen particles, as well as hints of another new particle, in high-energy proton collisions. The LHCb magnet. Image credit: CERN. The newly-discovered particles, named Σb(6097)+ and Σb(6097)–, are predicted by the quark model, and belong to the same …

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