Special relativity
Scientific Concept
New Theory of Gravity Decouples Space & Time...observation. When and if that happens then it will be a really major advance. It certainly seems like we're edging closer to something. Special relativity, of course, forbids sending information faster than light. A theory supplanting the... In this article: Special relativity, General relativity, Albert Einstein, Big Bang, Stress-energy tensor, Spacetime, Helium, CERN, and University of California in Berkeley |
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The Japan Times: All Stories | November 21, 2009
Top artist draws growing global conclusions
...a nucleus or subatomic particle. In more accessible language, it is thought to be an example of the materialization of energy as predicted by special relativity theory in the scientific realm of quantum electrodynamics. "I'm upsetting all...
In this article: Growing Earth Theory, Dark Knight, X-Men, Quantum electrodynamics, Positron, Electron, Hydrogen, and Superman
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Slashdot | November 13, 2009
Rosetta Fly-By To Probe Pioneer Anomaly
...but only the expected amount from its 2007 fly-by. Several theories have been advanced, from mundane atmospheric drag to exotic variations on special relativity, but none are so far adequate to explain both the unexpected velocity increases...
In this article: ESA, NASA, Mars, Rosetta probe, Cassini, Wikipedia, and Saturn
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Telegraph.co.uk - Science news | November 11, 2009
The 10 weirdest physics facts from relativity to quantum physics
...show a different time to the receivers on the ground. A lot of computing power has to go into making your sat-nav work around the theory of special relativity. A particle here can affect one on the other side of the universe,...
In this article: Physics, Atom, Speed of light, Banana, Photon, Cherenkov radiation, Electron, Rubidium, Hydrogen, and Wikimedia Commons
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SmartMoney.com | November 10, 2009
Finding Your Next 'Eureka' Moment
...physicist Richard Feynman used to visit a topless bar, sip a soda and scribble quantum mechanics on a napkin. Einstein's theory of special relativity came after he imagined himself a child riding on a beam of light. And Greg Swartz,...
In this article: Richard Feynman, Walker Digital, Quantum mechanics, University of Toronto, University of British Columbia, and Northwestern University
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The Daily Campus | November 04, 2009
Mallett talks time travel at science center
...scientific journals, showed how such a machine might be brought to life. The lecture started with an explanation of Einstein's Special Theory of Relativity, which puts forth the idea that time is effected by motion and is a cornerstone...
In this article: Time travel, IP Address, Physics, Speed of light, Special Theory of Relativity, and United States Naval Observatory
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Science Blog - | November 02, 2009
Laser-plasma accelerators ride on Einstein's shoulders
Using Einstein's theory of special relativity to speedup computer simulations, scientists have designed laser-plasma accelerators with energies of 10 billion electron volts (GeV) and beyond. These systems, which have not been simulated in...
In this article: Speed of light, Electron, E mail, and UCLA
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New Scientist - Latest Headlines | October 28, 2009
Universe's quantum 'speed bumps' no obstacle for light
...Fermi telescope. The measurements contradict a 2005 result that supported the idea that space and time are not smooth. Einstein's theory of special relativity says that all electromagnetic radiation travels through a vacuum at the speed of...
In this article: Photon, Speed of light, Lee Smolin, NASA, Quantum mechanics, University of Hertfordshire, Perimeter Institute for Theoretical Physics, and Max Planck Institute
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Science News Online | October 28, 2009
Gamma-ray observations shrink known grain size of spacetime
Tininess of speed differences between photons from a gamma-ray burst uphold special relativity theory Texture of spacetimeA light wave travels through a spacetime that is grainy on the tiniest scales in this artist's illustration. A new...
In this article: Spacetime, Photon, Speed of light, Physics, Electron, Georges Seurat, Elementary particle, Electromagnetism, and CERN
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Sydney Morning Herald - Business | October 28, 2009
When science took a long, light look at itself
...had simple explanations of complex and abstract scientific concepts that are fascinating even today. For example, the explanation of special relativity and the associated "twin paradox" is as good as many current text books. Joan Leach, media...
In this article: University of Sydney, Electron, University of Queensland, Stuart Butler, The Sydney Morning Herald, Robert Raymond, and Four Corners
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Telegraph.co.uk - International news | October 23, 2009
How Galileo and his spyglass turned the world on its head
...declared that there was "nothing new" to be discovered in physics. That seismic shift came in the form of a short paper on special relativity by a German-born patent-office worker by the name of Albert Einstein. Again, it did not...
In this article: Physics, Albert Einstein, Cosmology, Catholic Church, University of Hawaii, Nicolaus Copernicus, and Thomas Kuhn
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Description from Wikipedia:
Special relativity (SR) (also known as the special theory of relativity or STR) is the physical theory of measurement in inertial frames of reference proposed in 1905 by Albert Einstein (after the considerable and independent contributions of Hendrik Lorentz and Henri Poincaré and others) in the paper "On the Electrodynamics of Moving Bodies". It generalizes Galileo's principle of relativity–that all uniform motion is relative, and that there is no absolute and well-defined state of rest (no privileged reference frames)–from mechanics to all the laws of physics, including both the laws of mechanics and of electrodynamics, whatever they may be. Special relativity incorporates the principle that the speed of light is the same for all inertial observers regardless of the state of motion of the source.
This theory has a wide range of consequences which have been experimentally verified, including counter-intuitive ones such as length contraction, time dilation and relativity of simultaneity, contradicting the classical notion that the duration of the time interval between two events is equal for all observers. (On the other hand, it introduces the space-time interval, which is invariant.) Combined with other laws of physics, the two postulates of special relativity predict the equivalence of matter and energy, as expressed in the mass-energy equivalence formula E = mc, where c is the speed of light in a vacuum. The predictions of special relativity agree well with Newtonian mechanics in their common realm of applicability, specifically in experiments in which all velocities are small compared to the speed of light.
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