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The Theory of Relativity is a geometrical theory of gravitation, stating that the [[speed of light]] and laws of physics are constant for all (inertial) observers, regardless of their velocities relative to each other.

The Theory of Relativity is a geometrical theory of gravitation, it postulates that the [[speed of light]] and laws of physics are constant for all (inertial) observers, regardless of their velocities relative to each other.

The theory of relativity was first proposed based on mathematical theory developed by [[Henri Poincaré]] and [[Hendrik Lorentz]]. This theory differs from [[Isaac Newton]]'s theory of gravitation by disposing with the idea of a universal, mutually agreeable scale of time (i.e. a universal clock that all times can refer to) and space (i.e. a universal sheet of "graph paper", which location refers to).  

The theory of relativity was first proposed based on mathematical theory developed by [[Henri Poincaré]] and [[Hendrik Lorentz]]. This theory differs from [[Isaac Newton]]'s theory of gravitation by disposing with the idea of a universal, mutually agreeable scale of time (i.e. a universal clock that all times can refer to) and space (i.e. a universal sheet of "graph paper", which location refers to).