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Proceedings Paper

A Superconducting Gyroscope To Test Einstein's General Theory Of Relativity
Author(s): C. W. F. Everitt
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Paper Abstract

In 1960 L.I. Schiff suggested a new test of Einstein&apos's General Theory of Relativity based on measuring the precessions of the spin axes of gyroscopes in orbit around the Earth. Since 1963 a research group in Stanford Physics and Aeronautics Departments has been developing an experiment to measure the two effects calculated by Schiff. The gyro-scope consists of a uniform sphere of fused quartz 38 mm in diameter, coated with super-conductor, electrically suspended and spinning at about 170 Hz in a vacuum. Readout is by magnetic observation of the London moment in the spinning superconductor. The paper describes the proposed flight apparatus and the current state of development of the gyroscope, including techniques for manufacturing and measuring the gyro rotor and housing, generating ultra-low magnetic fields, and mechanizing the readout. The torque analysis, which indicates a limiting gyro drift-rate of 2 x 10-11 deg/hour in space, is briefly summarized.

Paper Details

Date Published: 15 December 1978
PDF: 14 pages
Proc. SPIE 0157, Laser Inertial Rotation Sensors, (15 December 1978); doi: 10.1117/12.965483
Show Author Affiliations
C. W. F. Everitt, Stanford University (United States)

Published in SPIE Proceedings Vol. 0157:
Laser Inertial Rotation Sensors
Shaoul Ezekiel; G. E. Knausenberger, Editor(s)

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