Abstract

A ballistic gravimeter has been constructed using a laser interferometer to measure the vertical distance traversed by a free-falling body and a rubidium frequency standard to measure elapsed time. The error in distance and time measurement are estimated to be less than 2 × 10−8 and 2 × 10−11 respectively. The systematic error in measuring gravitational acceleration, after corrections have been made, does not exceed 0.02 mgal.

© 1974 Optical Society of America

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