Hill, Edward L. Formerly, University of Minnesota, Minneapolis, Minnesota.
- Additional Readings
The contraction of a moving body in the direction of its motion. In 1892 G. F. FitzGerald and H. A. Lorentz proposed independently that the failure of the Michelson-Morley experiment to detect an absolute motion of the Earth in space arose from a physical contraction of the interferometer in the direction of the Earth's motion. According to this hypothesis, as formulated more exactly by Albert Einstein in the special theory of relativity, a body in motion with speed υ is contracted by a factor in the direction of motion, where c is the speed of light. See also: Light; Relativity
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