20-foot Michelson interferometer on Hooker telescope
1920 August 9
- Title
- 20-foot Michelson interferometer on Hooker telescope
- Collection
- Caltech Images Collection
- Series
- Academic Divisions and Departments
- Sub-Series
- Astronomy (Astrophysics)
- Identifier
- 10.13-21
- Dates
- 1920 August 9
- Extents
- 1 photographs (negative)