News tagged with repulsive energy
Repulsive gravity as an alternative to dark energy (Part 2: In the quantum vacuum)
(PhysOrg.com) -- During the past few years, CERN physicist Dragan Hajdukovic has been investigating what he thinks may be a widely overlooked part of the cosmos: the quantum vacuum. He suggests that the quantum vacuum has ...
Feb 01, 2012 |
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Repulsive gravity as an alternative to dark energy (Part 1: In voids)
(PhysOrg.com) -- When scientists discovered in 1998 that the Universe is expanding at an accelerating rate, the possibility that dark energy could explain the observation was intriguing. But because there ...
Jan 31, 2012 |
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Hubble breaks new ground with discovery of distant exploding star
NASA's Hubble Space Telescope has looked deep into the distant universe and detected the feeble glow of a star that exploded more than 9 billion years ago. The sighting is the first finding of an ambitious ...
Jan 11, 2012 |
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New material for thermonuclear fusion reactors
Scientists at Universidad Carlos III de Madrid, Oxford University and the University of Michigan have joined efforts to develop new materials for thermonuclear fusion reactors. Their research focuses on characterization ...
Jan 09, 2012 |
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How to build doughnuts with Lego blocks
Scientists have uncovered how nature minimises energy costs in rings of liquids with an internal nanostructure made of two chemically discordant polymers joined with strong bonds, or di-blocks, deposited on ...
Dec 21, 2011 |
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Study discovers amazing electrical properties in polymers
(PhysOrg.com) -- Crystals and ceramics pale when compared to a material researchers at Oak Ridge National Laboratory discovered that has 10 times their piezoelectric effect, making it suitable for perhaps hundreds of everyday ...
Sep 23, 2011 |
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Antigravity could replace dark energy as cause of Universe's expansion
Since the late 20th century, astronomers have been aware of data that suggest the universe is not only expanding, but expanding at an accelerating rate. According to the currently accepted model, this accelerated ...
Apr 18, 2011 |
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Impact sensor provides athletic support
As athletes strive for perfection, sports scientists need to exploit every technological advance to help them achieve that goal. Researchers in New Zealand have now developed a new type of wearable impact sensor based that ...
May 14, 2010 |
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Metamaterials could reduce friction in nanomachines
(PhysOrg.com) -- Nanoscale machines expected to have wide application in industry, energy, medicine and other fields may someday operate far more efficiently thanks to important theoretical discoveries concerning the manipulation ...
Nanotechnology / Nanomaterials
Dec 07, 2009 |
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A Theory of Dark Matter
Among the most astounding, unexpected, and important achievements of the past century (or even more) have been the discoveries of dark matter and dark energy, collectively dubbed the "dark sector."
Sep 08, 2009 |
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The day the universe froze: New dark energy model includes cosmological phase transition
Imagine a time when the entire universe froze. According to a new model for dark energy, that is essentially what happened about 11.5 billion years ago, when the universe was a quarter of the size it is today.
May 08, 2009 |
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New Data Suggests We Don’t Live in a Void, and Supports Dark Energy
(PhysOrg.com) -- An alternative proposal to dark energy in which the Earth sits near the center of a large void is undergoing scrutiny, and the results show that void models fit poorly with observed data. ...
Jan 28, 2009 |
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