News tagged with quantum physics theory
Proposed Spacetime Structure Could Provide Hints for Quantum Gravity Theory
(PhysOrg.com) -- Spacetime, which consists of three dimensions of space and one time dimension, is such a large, abstract concept that scientists have a very difficult time understanding and defining it. Moreover, ...
Dec 16, 2009 |
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Does weak equivalence break down at the quantum level?
(PhysOrg.com) -- One of the givens in physics is the weak equivalence principle. This principle has been considered solid since Einstein proposed that it is not possible to detect the difference between uniform acceleration ...
Dec 08, 2009 |
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Visual assistance for cosmic blind spots
A bit of imagination on the part of a measuring instrument wouldn't be a bad thing. It could help to add data from areas where the instrument is unable to measure. However, it must do so constructively. In ...
Nov 23, 2009 |
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Study Shows Time Traveling May Not Increase Computational Power
(PhysOrg.com) -- For more than 50 years, physicists have been intrigued by the concept of closed time-like curves (CTCs). Because a CTC returns to its starting point, it raises the possibility of traveling backward in time. ...
Oct 22, 2009 |
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Physicists make discovery in quantum mechanics
(Santa Barbara, Calif.) -- Physicists at UC Santa Barbara have made an important advance in quantum mechanics using a superconducting electrical circuit. The finding is reported in this week's issue of the journal Nature.
Sep 23, 2009 |
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In brief: A tiny, tunable well of light, and a string theorist's toolbox
Promising photonic devices, and theorists attempt to determine whether particle physics and string theory can be reconciled.
Sep 21, 2009 |
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Vanquishing infinity: Old methods lead to a new approach to finding a quantum theory of gravity
Quantum mechanics and Einstein's theory of general relativity are both extremely accurate theories of how the universe works, but all attempts to combine the two into a unified theory have ended in failure. ...
Aug 17, 2009 |
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New Law of Physics Could Explain Quantum Mysteries
(PhysOrg.com) -- Since the early days of quantum mechanics, scientists have been trying to understand the many strange implications of the theory: superpositions, wave-particle duality, and the observer’s ...
Aug 17, 2009 |
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On the path to metallic hydrogen
Hydrogen, the most common element in the universe, is normally an insulating gas, but at high pressures it may turn into a superconductor. Now, scientists at the Carnegie Institution in Washington D.C., US, ...
Aug 03, 2009 |
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Quantum measurements: Common sense is not enough
(PhysOrg.com) -- In comparison to classical physics, quantum physics predicts that the properties of a quantum mechanical system depend on the measurement context, i.e. whether or not other system measurements ...
Jul 22, 2009 |
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Researcher Investigates the Basis of Einstein's First Approximation in the Theory of Relativity
(PhysOrg.com) -- In his discussion of accelerated motion on page 60 of The Meaning of Relativity, Albert Einstein made an approximation that allowed him to develop the theory of relativity further. Einstein apparently never ...
Jul 15, 2009 |
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Math theories may hold clues to origin, future of life in universe
How did we get here and where are we headed? These are some of life's biggest questions. To get the answers, one Kansas State University professor is doing the math.
Jun 09, 2009 |
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Making quantum cryptography practical
Quantum cryptography, a completely secure means of communication, is much closer to being used practically as researchers from Toshiba and Cambridge University's Cavendish Laboratory have now developed high speed detectors ...
Apr 30, 2009 |
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In Memoriam: Martin J. Klein, Historian of Modern Physics, Edited Einstein Papers
(PhysOrg.com) -- Martin Jesse Klein, a historian of modern physics and former senior editor of "The Collected Papers of Albert Einstein," passed away on March 28. He was 84 years old.
Apr 10, 2009 |
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How do we support today’s Einsteins?
Is today's academic and corporate culture stifling science’s risk-takers and stopping disruptive, revolutionary science from coming to the fore? In April’s Physics World the science writer Mark Buchanan looks at those who ...
Apr 01, 2009 |
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