News tagged with spacetime geometry
Model describes universe with no big bang, no beginning, and no end
(PhysOrg.com) -- By suggesting that mass, time, and length can be converted into one another as the universe evolves, Wun-Yi Shu has proposed a new class of cosmological models that may fit observations of the universe better ...
Jul 29, 2010 |
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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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Search results for spacetime geometry
Every black hole contains a new universe: A physicist presents a solution to present-day cosmic mysteries
Our universe may exist inside a black hole. This may sound strange, but it could actually be the best explanation of how the universe began, and what we observe today. It's a theory that has been explored ...
May 18, 2012 |
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Listening to the stars
It is almost night on the island of Puerto Rico. Astronomer Joanna Rankin raises her head toward the sky. A few of the brightest stars shine through blue cracks in a ragged dome of gray clouds. To her back, ...
Dec 01, 2011 |
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Black holes: a model for superconductors?
Black holes are some of the heaviest objects in the universe. Electrons are some of the lightest. Now physicists at the University of Illinois at Urbana-Champaign have shown how charged black holes can be ...
Mar 02, 2011 |
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Origin of magnetic fields may lie in special relativity's spacetime distortions
(PhysOrg.com) -- Magnetic fields play an important role on scales ranging from the sub-atomic to the cosmic, from particle spins to galaxy clusters. Although scientists know how to create and manipulate magnetic ...
Sep 09, 2010 |
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Most precise test yet of Einstein's gravitational redshift
(PhysOrg.com) -- While airplane and rocket experiments have proved that gravity makes clocks tick more slowly - a central prediction of Albert Einstein's general theory of relativity - a new experiment in ...
Feb 17, 2010 |
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Spacetime May Have Fractal Properties on a Quantum Scale
(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 ...
Mar 25, 2009 |
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Study Rules Out Fröhlich Condensates in Quantum Consciousness Model
(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 ...
Mar 10, 2009 |
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Mathematician suggests extra dimensions are time-like
In a recent study, mathematician George Sparling of the University of Pittsburgh examines a fundamental question pondered since the time of Pythagoras, and still vexing scientists today: what is the nature ...
Apr 17, 2007 |
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The New New Math of String Theory
At the beginning of the last century, Albert Einstein posited a now famous theory that forever linked geometry and fundamental physics. According to general relativity, spacetime is curved, and that curvature ...
Jun 20, 2006 |
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Our Universe: A Quantum Loop
“There are two classical branches of the universe connected by a quantum bridge. This connects the former collapse with the current expansion.” While Abhay Ashtekar and his colleagues, Tomasz Pawlowski and Parampreet Singh, ...
Physics /
Apr 25, 2006 |
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List of search results for spacetime geometry
