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Laser device provides accurate reference to true gravitational verticalModification of conventional laser provides correct gravitational alignment by utilizing surface pool of mercury as a gravity-sensitive cavity mirror. Laser action is stimulated only when mirrors are normal to the axis of the beam.
Document ID
19710000476
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Billman, K. W. (DOT)
Leonard, E. T.
Date Acquired
August 6, 2013
Publication Date
December 1, 1971
Subject Category
Machinery
Report/Patent Number
ARC-10444
Report Number: ARC-10444
Accession Number
71B10479
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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