# Theory of relativity

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− | The '''theory of relativity''' is either of two [[scientific]] theories | + | The '''theory of relativity''' is either of two [[scientific]] theories devised by [[Albert Einstein]] regarding the large-scale structure and behavior of the [[universe]]: |

* The '''[[Wikipedia:Special relativity|special theory of relativity]]''' (published in 1905) describes the behavior of objects in motion (at constant [[wikipedia:velocity|velocity]]) in terms of their frames of reference, essentially refining the classical mechanics (physics of bodies in motion) delevoped by [[Galileo]] and [[Isaac Newton]], among others. After being reformulated in terms of a proposed four-dimensional "[[wikipedia:spacetime|spacetime]]" by [[Wikipedia:Hermann Minkowski|Hermann Minkowski]] in 1908, the theory became a powerful conceptual and computational tool. | * The '''[[Wikipedia:Special relativity|special theory of relativity]]''' (published in 1905) describes the behavior of objects in motion (at constant [[wikipedia:velocity|velocity]]) in terms of their frames of reference, essentially refining the classical mechanics (physics of bodies in motion) delevoped by [[Galileo]] and [[Isaac Newton]], among others. After being reformulated in terms of a proposed four-dimensional "[[wikipedia:spacetime|spacetime]]" by [[Wikipedia:Hermann Minkowski|Hermann Minkowski]] in 1908, the theory became a powerful conceptual and computational tool. | ||

* The '''[[Wikipedia:General relativity|general theory of relativity]]''' (completed in 1915) explains [[wikipedia:gravitation|gravitation]] in terms of the curvature of spacetime. It extends the results of special relativity to non-intertial (that is, accelerating) frames of reference. | * The '''[[Wikipedia:General relativity|general theory of relativity]]''' (completed in 1915) explains [[wikipedia:gravitation|gravitation]] in terms of the curvature of spacetime. It extends the results of special relativity to non-intertial (that is, accelerating) frames of reference. |

## Revision as of 12:52, 17 October 2007

For more information, see the Wikipedia article:

The **theory of relativity** is either of two scientific theories devised by Albert Einstein regarding the large-scale structure and behavior of the universe:

- The
**special theory of relativity**(published in 1905) describes the behavior of objects in motion (at constant velocity) in terms of their frames of reference, essentially refining the classical mechanics (physics of bodies in motion) delevoped by Galileo and Isaac Newton, among others. After being reformulated in terms of a proposed four-dimensional "spacetime" by Hermann Minkowski in 1908, the theory became a powerful conceptual and computational tool. - The
**general theory of relativity**(completed in 1915) explains gravitation in terms of the curvature of spacetime. It extends the results of special relativity to non-intertial (that is, accelerating) frames of reference.

It must be noted that Einstein's relativity has nothing to do with philosophical relativism in any form (moral, ethical, cultural, etc.); they merely sound similar and ultimately derive from the same Latin root. The name "relativity" comes from the fact that both theories are based on more general concepts called principles of relativity — essentially that the laws of physics should not depend on special frames of reference.