special theory of relativity

noun

1. the theory proposed in 1905 by Einstein, which assumes that the laws of physics are equally valid in all nonaccelerated frames of reference and that the speed of electromagnetic radiation in free space has the same value for all inertial observers. It leads to the idea of a space-time continuum and the equivalence of mass and energy. In combination with quantum mechanics it forms the basis of the theory of elementary particles Also calledspecial relativity See also general theory of relativity

Example Sentences

According to Einstein’s special theory of relativity, time’s flow depends on how fast you’re moving.

From Scientific American

Although the definition of the second is the same everywhere, the special theory of relativity dictates that clocks tick slower in stronger gravitational fields.

From Scientific American

According to the tenets of quantum field theory—an uneasy union between Einstein’s special theory of relativity and quantum mechanics used to model the behavior of subatomic particles—empty space isn’t actually empty.

From Scientific American

According to Einstein’s special theory of relativity, this is a physical constant.

From Scientific American

Eventually this process launches some stars up to the speed of light in accordance with Albert Einstein’s special theory of relativity, making them what astrophysicists call “relativistic.”

From Scientific American

Related Words

• relativity