News tagged with theory
Study Shows Time Traveling May Not Increase Computational Power
Oct 22, 2009 |
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(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. ...
Winning While Losing: New Strategy Solves 'Two-Envelope' Paradox
Aug 18, 2009 |
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(PhysOrg.com) -- Researchers from Australia have taken a step toward resolving a seemingly simple yet unsolved paradox known as the "two-envelope" problem. They’ve worked out a new strategy that can enable ...
New Law of Physics Could Explain Quantum Mysteries
Aug 17, 2009 |
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(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 ...
Study of 'Persistent Currents' Finally Verifies Theory
Apr 28, 2009 |
4.7 / 5 (23) |
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(PhysOrg.com) -- Approximately 20 years ago, scientists discovered that is is possible for an electric current to flow endlessly in a ring made of a normal metal. One might think that such an 'old' finding ...
Can R2 gravity explain dark matter?
Apr 20, 2009 |
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(PhysOrg.com) -- "In many ways, the standard model of cosmology works very well," Jose Cembranos tells PhysOrg. "However, there are very basic features that we just do not know. We have dark energy and dark matter. They d ...
Quantum Theory May Explain Wishful Thinking
Medicine & Health / Psychology & Psychiatry
Apr 14, 2009 |
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(PhysOrg.com) -- Humans don’t always make the most rational decisions. As studies have shown, even when logic and reasoning point in one direction, sometimes we chose the opposite route, motivated by personal ...
Spacetime May Have Fractal Properties on a Quantum Scale
Mar 25, 2009 |
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(PhysOrg.com) -- Usually, we think of spacetime as being four-dimensional, with three dimensions of space and one dimension of time. However, this Euclidean perspective is just one of many possible multi-dimensional ...
Study Rules Out Fröhlich Condensates in Quantum Consciousness Model
Mar 10, 2009 |
3.9 / 5 (36) |
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(PhysOrg.com) -- Scientists don't fully understand how consciousness works, and, so far, no classical theories can explain consciousness in the brain. In light of this lack of understanding, some researchers ...
Strategies for Retailers Fighting Price Wars
Technology / Computer Sciences
Feb 04, 2009 |
2.9 / 5 (10) |
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(PhysOrg.com) -- All retail companies want to maximize their profits, while at the same time maintaining high market share compared with their competitors. One way to do this is by promising to offer the lowest ...
Qubits and Branes Share Surprising Features
Jul 03, 2008 |
4.6 / 5 (95) |
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What do black holes and entangled particles have in common? Until about a year ago, physicists thought that the two entities existed in completely separate worlds. Then, in 2007, physicist Michael Duff from ...
A line on string theory
Nov 12, 2009 |
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(PhysOrg.com) -- A Harvard theoretical physicist has discussed with scientists at the Large Hadron Collider in Switzerland the possibility that they may discover a theorized "stau" particle, with a lifetime ...
Gamma-ray photon race ends in dead heat; Einstein wins this round
Oct 28, 2009 |
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Racing across the universe for the last 7.3 billion years, two gamma-ray photons arrived at NASA's orbiting Fermi Gamma-ray Space Telescope within nine-tenths of a second of one another. The dead-heat finish ...
Chinese scientists create metamaterial black hole
Oct 16, 2009 |
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(PhysOrg.com) -- Two physicists in China have used metamaterials to create the first artificial electromagnetic black hole. The scientists, Qiang Cheng and Tie Jun Cui from the Southeast University in Nanjing, ...
Physicists make discovery in quantum mechanics
Sep 23, 2009 |
4.3 / 5 (27) |
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(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.
Oddball stars explained
Sep 17, 2009 |
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(PhysOrg.com) -- New observations solve longstanding mystery of tipped rotation. In addition to shedding light on how binary stars form, the explanation knocks down a possible challenge to Einstein's theory ...
