Joseph Hafele
Joseph Carl Hafele (born July 25, 1933 in Peoria , Illinois , † November 15, 2014 in Loveland (Colorado) ) was an American physicist , known for the Hafele-Keating experiment with the astronomer Richard E. Keating to prove relativistic Effects on the running of clocks.
Hafele studied physics at the University of Illinois with a bachelor's degree in 1959, a master's degree in 1960 and a doctorate in 1964. As a post-doctoral student , he was a member of the Los Alamos National Laboratory . Hafele was an Assistant Professor at Washington University from 1966 to 1972 , where he remained until 1977. He then worked for Caterpillar as an engineer.
He was Assistant Professor at Eureka College from 1985 to 1990 and at the same time NASA Summer Research Fellow from 1987 to 1990 . From 1991 he was at Christopher Newport University .
The Hafele-Keating experiment was carried out in October 1971 with four atomic clocks that flew around the world once west and once east on board aircraft. Then their time display was compared with that of synchronized atomic clocks that were in the United States Naval Observatory (at which Keating had been employed in the timekeeping department since 1966).
Hafele was a member of the American Physical Society and the American Association for the Advancement of Science . He had been married since 1958 and had four children.
Individual evidence
- ↑ Life data according to American Men and Women of Science , Thomson Gale 2004
- ↑ Joseph Hafele
- ^ Hafele, Keating Around-the-World Atomic Clocks: Predicted Relativistic Time Gains , Science, Volume 177, 1972, pp. 166-168
| personal data | |
|---|---|
| SURNAME | Hafele, Joseph |
| ALTERNATIVE NAMES | Hafele, Joseph Carl (full name) |
| BRIEF DESCRIPTION | American physicist |
| DATE OF BIRTH | July 25, 1933 |
| PLACE OF BIRTH | Peoria , Illinois |
| DATE OF DEATH | 15th November 2014 |
| Place of death | Loveland (Colorado) |