Cloud chamber photo of pi-mesons produced out of nuclear disintegration
1935
- Title
- Cloud chamber photo of pi-mesons produced out of nuclear disintegration
- Collection
- Caltech Images Collection
- Series
- Individuals
- Identifier
- CDA5.10-13
- Dates
- 1935
- Extents
- 1 photographs (negative)
- Abstract
- Anderson notes that he wrote a letter to Robert Millikan saying that they were mesons, but Millikan refused to believe it. Pi- and mu-mesons were not clearly distinguished until the 1950s. Carl Anderson Papers.