Verifying the gravitational shift due to the earth's rotation

Computer Science

Scientific paper

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Earth Rotation, Frequency Shift, Gravitational Waves, Time Measurement, Atomic Clocks, Chronometers, Loran C, Relativistic Effects, Units Of Measurement

Scientific paper

Results are reported for an attempt to verify the gravitational frequency shift in standard time measurements due to the earth's rotation by comparing the proper time scales kept by several laboratories and observatories throughout Europe and North America. Equations are presented which describe how the earth's rotation affects precise time measurements owing to both general and special relativistic effects that result from latitudinal variations in the gravitational-field intensity and the peripheral rotational velocity. The equations are applied to time measurements by the Loran-C chains and to measurements of universal and atomic time maintained at eight observatories and laboratories. The regular differences among the time measurements at three observatories and the good agreement with the theoretical amplitude of the effect in one case are taken as experimental evidence confirming the relativistic effects of the earth's rotation.

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