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- Dictionaryrelativity/ˌrɛləˈtɪvɪti/
noun
- 1. the absence of standards of absolute and universal application: "moral relativity"
- 2. the dependence of various physical phenomena on relative motion of the observer and the observed objects, especially regarding the nature and behaviour of light, space, time, and gravity.
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Learn about the two physics theories by Albert Einstein that explain the structure of spacetime and the law of gravitation. Find out the history, development, tests, applications and concepts of special and general relativity.
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Jul 31, 2024 · Relativity, wide-ranging physical theories formed by the German-born physicist Albert Einstein. Special relativity is limited to objects that are moving with respect to inertial frames of reference. General relativity is concerned with gravity, one of the fundamental forces in the universe.
- 1895: Running Beside a Light Beam. By this point, Einstein’s ill-disguised contempt for his native Germany’s rigid, authoritarian educational methods had already gotten him kicked out of the equivalent of high school, so he moved to Zurich in hopes of attending the Swiss Federal Institute of Technology (ETH).
- 1904: Measuring Light From a Moving Train. It wasn’t easy. Einstein tried every solution he could think of, and nothing worked. Almost out of desperation, he began to consider a notion that was simple but radical.
- May 1905: Lightning Strikes a Moving Train. Einstein’s revelation was that observers in relative motion experience time differently: it’s perfectly possible for two events to happen simultaneously from the perspective of one observer, yet happen at different times from the perspective of the other.
- September 1905: Mass and Energy. That first paper wasn’t the end of it, though. Einstein kept obsessing on relativity all through the summer of 1905, and in September he sent in a second paper as a kind of afterthought.
General relativity is the geometric theory of gravitation published by Albert Einstein in 1915 and is the current description of gravity in modern physics. It predicts phenomena such as gravitational time dilation, lensing, redshift, waves, black holes and cosmology.
Learn how Einstein revolutionized our understanding of space, time and gravity with his special and general relativity theories. Discover how he predicted and verified the bending of light, gravitational redshift and gravitational waves.
May 14, 2023 · Learn how Einstein's theory of general relativity explains how massive objects warp the fabric of space-time, causing gravity. Explore the phenomena and evidence of general relativity, such as gravitational lensing, frame-dragging, redshift and gravitational waves.
