Hugo Benioff with fused-quartz extensometer
1957
- Title
- Hugo Benioff with fused-quartz extensometer
- Collection
- Caltech Images Collection
- Series
- Academic Divisions and Departments
- Sub-Series
- Physics
- Identifier
- 10.50-1
- Dates
- 1957
- Extents
- 1 photographs (negative)
- Abstract
- This instrument was designed to measure the tidal strains of the earth produced by the gravitational action of the sun and moon. It also could record ultra-long seismic waves and the possible free oscillation of the earth. This photo is probably taken at an installation in Santiago, Chile. See Engineering & Science, October 1957.