NASA NTRS · 19710000476
Laser device provides accurate reference to true gravitational vertical
Abstract
Modification 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.
Keep this discovery
Explore connections, maps & timelines
Billman, K. W., Leonard, E. T.. 1971-12-01. Laser device provides accurate reference to true gravitational vertical. https://ntrs.nasa.gov/citations/19710000476
Cite the original work for its findings. Save a collection to share your selection of sources.