Abstract

The Eel and the Measuring Rod
Russell, Bertrand | June 17, 1925 issue

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The special theory of relativity was published by the U.S. physicist Albert Einstein in 1905; the general theory in 1915. The special theory dealt with a, special case and made the need of the general theory very evident, but the difficulties to be overcome were tremendous. The essential novelty of Einstein's theory of gravitation consists in the suggestion that what appears as an influence emanating from the sun and causing the planets to go round it is really a characteristic of the region in which the planets move. If one assumes conventionally that some one body is at rest, the laws of physics must be just the same as if one assumes that some other body is at rest.

See Also:

RELATIVITY (Physics); GRAVITATION; EINSTEIN, Albert, 1879-1955; PLANETS; MATTER -- Properties; COSMOLOGY
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