Page:Benton 1959 The Clock Problem (Clock Paradox) in Relativity.djvu/30



Considers measurements of lengths and times on relatively moving bodies, in which light signals are not involved.

A discussion of clocks which reverse their direction of motion is made in terms of an auxiliary moving clock to which the epochs of the original clocks are communicated on passing.

The derivation of the Lorentz transformations here given has for its central feature the confronting of the Maxwell electromagnetic picture of radiation with the laws of conservation of energy and momentum. The solution of apparent conflicts demands first the variation of mass with velocity, and then in turn the variation of linear dimensions and clock rate.

Considers an optical experiment which is competent to decide the value of n.

Verifies the dependence of the passage of time upon motion. Shows by experiments on high-speed hydrogen canal rays that the frequency of a moving radiating source is altered by the factor (1 - v2/c2)1/2, where v is the velocity of the source, and c the velocity of light.

Direct experimental verification of retardation using atomic clocks.