Robert A. Millikan holding 2 C.R. electrometers
1928
- Title
- Robert A. Millikan holding 2 C.R. electrometers
- Collection
- Caltech Photographs
- Series
- Photographs of Individuals
- Dates
- 1928
- Extents
- 1 photographs (negative)
- Abstract
- The electrometers were sent about ten miles into the atmosphere from San Antonio, TX to make cosmic ray intensity measurements in 1922.