News tagged with angular momentum
New research could help develop gamma ray lasers and produce fusion power
Positronium is a short-lived system in which an electron and its anti-particle are bound together. In 2007, physicists at the University of California, Riverside created molecular positronium, a brand-new ...
May 01, 2010 |
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Scientists show how to erase information without using energy
(PhysOrg.com) -- Until now, scientists have thought that the process of erasing information requires energy. But a new study shows that, theoretically, information can be erased without using any energy at ...
Jan 25, 2011 |
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Could the combination of general relativity and quantum mechanics lead to spintronics?
(PhysOrg.com) -- In the early 20th century, two famous discoveries about spin were made. One of them, discovered by Albert Einstein and Wander Johannes de Haas, explains a relationship between the spin of elementary particles. ...
Mar 03, 2011 |
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'Electron vortices' have the potential to increase conventional microscopes' capabilities
(PhysOrg.com) -- Electron microscopes are among the most widely used scientific and medical tools for studying and understanding a wide range of materials, from biological tissue to miniature magnetic devices, ...
Jan 16, 2011 |
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A Newtonian system that mimics the baldness of rotating black holes
(PhysOrg.com) -- The rotating black hole has been described as one of nature's most perfect objects. As described by the Kerr solution of Einstein's gravitational field equations, its spacetime geometry is ...
Feb 23, 2009 |
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Isotope near 'doubly magic' tin-100 flouts conventional wisdom
(PhysOrg.com) -- Tin may seem like the most unassuming of elements, but experiments performed at the Department of Energy's Oak Ridge National Laboratory are yielding surprising properties in extremely short-lived ...
Oct 21, 2010 |
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Rapidly rotating graphene is fastest-spinning macroscopic object ever
(PhysOrg.com) -- At 60 million rotations per minute, a two-dimensional sheet of graphene has become the fastest-spinning trapped macroscopic object ever. Graphene is known for its large strength, and it's ...
Nanotechnology / Nanomaterials
Sep 30, 2010 |
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The Spin Cycle: Nanoresearch could lead to next generation of transistors
(PhysOrg.com) -- For decades, the transistors inside radios, televisions and other everyday items have transmitted data by controlling the movement of the electron’s charge. Scientists now have discovered ...
Oct 20, 2009 |
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Recipes for Renegade Planets
Recent discoveries of gas giant planets in unusual orbits challenge the generally accepted theory of planet formation. While these discoveries do not disprove the theory, they have opened our eyes to chaotic ...
Jul 08, 2010 |
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How do supermassive black holes get so big?
(PhysOrg.com) -- At the center of most galaxies lie supermassive black holes that can grow to become more than a billion times larger than our Sun. However, astrophysicists don’t fully understand the formation ...
Apr 26, 2010 |
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Scientists produce a crystal that could help unlock the mystery of high-temperature superconductors
MIT scientists have synthesized, for the first time, a crystal they believe to be a two-dimensional quantum spin liquid: a solid material whose atomic spins continue to have motion, even at absolute zero temperature.
Mar 29, 2011 |
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Stretching single molecules allows precision studies of interacting electrons
(PhysOrg.com) -- With controlled stretching of molecules, Cornell researchers have demonstrated that single-molecule devices can serve as powerful new tools for fundamental science experiments. Their work ...
Jun 10, 2010 |
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Stellar astrophysics explains the behavior of fast rotating neutron stars in binary systems
Pulsars are among the most exotic celestial bodies known. They have diameters of about 20 kilometres, but at the same time roughly the mass of our sun. A sugar-cube sized piece of its ultra-compact matter ...
Feb 02, 2012 |
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Atoms dressed with light show new interactions, could reveal way to observe enigmatic particle
(PhysOrg.com) -- Scientists at the Joint Quantum Institute (JQI) have for the first time engineered and detected the presence of high angular momentum collisions between atoms at temperatures close to absolute ...
Dec 08, 2011 |
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Cassini Thruster Swap Planned
(PhysOrg.com) -- The Cassini spacecraft will swap to a backup set of propulsion thrusters in mid-March due to degradation in the performance of the current set of thrusters.
Space & Earth / Space Exploration
Feb 02, 2009 |
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