Title:
GRAVITY CLINOMETER
Document Type and Number:
Japanese Patent JPS54164173
Kind Code:
A
Abstract:
The gradiometer has a laser (2) whose beam (3) has several circular polarisations, and a modulator (12) with a photoelastic element in the laser beam (3) path for differential changes of circular polarisations as a function of a load. The modulator (12) centre is stationary relative to the beam (3) path. Two mass dipoles (16, 18) perpendicular to each other are connected to the modulator (12) ends, so that a gravity gradient in a plane perpendicular to the beam (3) path generates torques in the above mass dipoles (16, 18), and thus a frequency different between the circular polaridation. This frequency difference is measured by a device (30).
Inventors:
SEODOAA BARII RAUTSUZENHAIZAA
Application Number:
JP6670879A
Publication Date:
December 27, 1979
Filing Date:
May 29, 1979
Export Citation:
Assignee:
STANDARD OIL CO
International Classes:
G01V7/10; G01V7/00; (IPC1-7): G01V7/04
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