John Ray Dunning
John Ray Dunning (born September 24, 1907 in Shelby , Nebraska , † August 25, 1975 in Key Biscayne , Florida ) was an American nuclear physicist. He was involved in the development of nuclear weapons .
Dunning graduated from Nebraska Wesleyan University in 1929 . In 1934 he received his PhD from Columbia University . In 1936 he directed the construction of a cyclotron . In 1935 he became a Fellow of the American Physical Society .
Dunning was able to reproduce and verify the experiments of Otto Hahn and Fritz Straßmann on nuclear fission . In 1940 Dunning's group was able to show that the uranium isotope 235 U is more suitable for nuclear fission than 238 U.
In 1948 he was elected a member of the National Academy of Sciences .
Web links
- John Ray Dunning - A Biographical Memoir (PDF; 1.2 MB) by Herbert L. Anderson
| personal data | |
|---|---|
| SURNAME | Dunning, John Ray |
| BRIEF DESCRIPTION | American nuclear physicist |
| DATE OF BIRTH | September 24, 1907 |
| PLACE OF BIRTH | Shelby , Nebraska |
| DATE OF DEATH | August 25, 1975 |
| Place of death | Key Biscayne , Florida |