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 * Theory of Relativity is a based on Albert Einstien's ideas of mass and energy being equal and every person will see light travel at the same speed.
 * In 1905 Albert Einstien published the General and Special Theory of Relativity. Time is relative. **


 * There is a concept that says every mass has an associated energy e=total energy m=mass and c=speed of light in a vaccum. Energy equals mass multiplied. **** Einstein's initial formulation in 1905 (now known as the special, or restricted, theory of relativity) does not treat gravitation; and one of the two principles on which it is based, the principle of relativity (the other being the principle of the constancy of the speed of light), stipulates the form invariance of physical laws only for inertial reference systems.

Theory of relativity was discovered by physicist Albert Einstein. There are two parts of theory of relativity; one is special relativity and the other one is general relativity. Einstein theories also explains the behavior of mass, energy, gravity, time and space. When developing the theories of relativity, Einstein used some ideas from Galileo(Stanford).

** **   The main difference of the general theory of relativity and the special theory of relativity is in how objects exerts from one another forces(Relativity). In the special theory of relativity, energy and momentum are not independent .The principle that all the laws of physics must assume the same mathematical form in any inertial frame of reference; it is impossible to determine the absolute motion of a system by any means. General Relativity is the theory of Einstein which generalizes special relativity to frames of reference and incorporates gravitation, when these events take place in a curved space. Special Relativity is the division of relativity theory which relates the observations of observers moving with constant relative velocities and postulates that natural laws are the same for all such observers.(access science dictionary) ** **This theory, referred to as the General Thoery of Relativitiy proposed theat matter causes space to curve(gerneral relativity 1)**

**Albert Einstein's Theory of Relativity consisted of two theories, general relativity and special relativity. These theories helped gain further understanding of black holes and the study of the universe as a whole. I believe that eventually we will know how and when our universe will begin to collapse if theories are correct. ** Work Cited Arora, Hans. "Einstein’s Theory of Relativity: Implications Beyond Science." __Science in Society__. 20 Oct. 2008. 5 Feb. 2009 .

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Lightman, Alan. "NOVA | Einstein's Big Idea | Relativity (Lightman Essay) | PBS." __PBS__. 5 Feb. 2009 http://www.pbs.org/wgbh/nova>.

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