Über die Schwere des Lichtes in der Newtonschen und in der Einsteinschen Gravitationstheorie

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Abstract

The gravity theories of Newton and Einstein are giving opposite sentences about the velocity of light in gravitational field. According to the Newtonian theory the velocity v in gravitational field is greater than the velocity c in a field-free space: v > c. According to general relativity theory we have a smaller velocity: v < c. For a spherical symmetric gravitational field Newton's theory gives equation image but Einstein's theory of 1911 gives equation image and general relativity gives equation image. Therefore, the radarecho-measurations of Shapiro are the experimentum crucis for Einstein's against Newton's theory.

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