Joseph Carl Hafele (25 July 1933 – 15 November 2014) was an American physicist best known for the Hafele–Keating experiment, a test of Einstein's theory of general relativity. Hafele was an apprentice welder when he was drafted to serve in the army during the Korean War. After the war, he obtained undergraduate and graduate degrees from the University of Illinois at Urbana-Champaign, earning his PhD in 1962 with a thesis on a topic in nuclear physics. He married Carol Hessling in 1958, and they had four daughters. He worked at Los Alamos National Laboratory, and then Washington University in St. Louis from 1966 to 1972. In 1971 he performed the Hafele-Keating experiment along with astronomer Richard E. Keating. He later worked at Caterpillar, Eureka College, NASA (Langley Air Force Base),
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| - Joseph Hafele (cs)
- Joseph Hafele (de)
- Joseph C. Hafele (fr)
- Joseph C. Hafele (en)
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| - Joseph Carl Hafele (né le 25 juillet 1933 à Peoria dans l'Illinois - mort le 15 novembre 2014 à Loveland dans le Colorado) est un physicien américain. Il a travaillé dans le domaine de la physique nucléaire et de la relativité générale. On lui doit notamment l'expérience de Hafele-Keating qui en 1971 a permis de tester la dilatation relativiste des durées en présence d'un champ gravitationnel. (fr)
- Joseph Carl Hafele (25. července 1933 – 15. listopadu 2014) byl Americký fyzik známý jako autor Hafele–Keatingova experimentu, testu Einsteinovy obecné teorie relativity. Hafele se učil svářečem, když byl povolán, aby sloužil v armádě během války v Koreji. Po válce získal bakalářský a magisterský titul na Univerzitě Illinois v Urbana-Champaign. V roce 1962 získal doktorát za diplomovou praci z jaderné fyziky. V roce 1958 se oženil s Carol Hesslingovou s níž měl čtyři dcery. Pracoval v Los Alamos National Laboratory, a poté na Washingtonské univerzitě (1966-1972). V této době byl proveden Hafele-Keatingův experiment. Později pracoval ve společnosti Caterpillar dále pro Eureca College, NASA (Langley Air Force Base) a Christopher Newport University. Po odchodu do penze v roce 1996 žil s manže (cs)
- Joseph Carl Hafele (* 25. Juli 1933 in Peoria, Illinois; † 15. November 2014 in Loveland (Colorado)) war ein US-amerikanischer Physiker, bekannt für das Hafele-Keating-Experiment mit dem Astronomen zum Nachweis relativistischer Effekte auf den Gang von Uhren. Er war von 1985 bis 1990 Assistant Professor am und gleichzeitig von 1987 bis 1990 NASA Summer Research Fellow. Ab 1991 war er an der . Hafele war Mitglied der American Physical Society und der American Association for the Advancement of Science. Er war seit 1958 verheiratet und hatte vier Kinder. (de)
- Joseph Carl Hafele (25 July 1933 – 15 November 2014) was an American physicist best known for the Hafele–Keating experiment, a test of Einstein's theory of general relativity. Hafele was an apprentice welder when he was drafted to serve in the army during the Korean War. After the war, he obtained undergraduate and graduate degrees from the University of Illinois at Urbana-Champaign, earning his PhD in 1962 with a thesis on a topic in nuclear physics. He married Carol Hessling in 1958, and they had four daughters. He worked at Los Alamos National Laboratory, and then Washington University in St. Louis from 1966 to 1972. In 1971 he performed the Hafele-Keating experiment along with astronomer Richard E. Keating. He later worked at Caterpillar, Eureka College, NASA (Langley Air Force Base), (en)
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| - Joseph Carl Hafele (25. července 1933 – 15. listopadu 2014) byl Americký fyzik známý jako autor Hafele–Keatingova experimentu, testu Einsteinovy obecné teorie relativity. Hafele se učil svářečem, když byl povolán, aby sloužil v armádě během války v Koreji. Po válce získal bakalářský a magisterský titul na Univerzitě Illinois v Urbana-Champaign. V roce 1962 získal doktorát za diplomovou praci z jaderné fyziky. V roce 1958 se oženil s Carol Hesslingovou s níž měl čtyři dcery. Pracoval v Los Alamos National Laboratory, a poté na Washingtonské univerzitě (1966-1972). V této době byl proveden Hafele-Keatingův experiment. Později pracoval ve společnosti Caterpillar dále pro Eureca College, NASA (Langley Air Force Base) a Christopher Newport University. Po odchodu do penze v roce 1996 žil s manželkou v Laramie ve Wyoming, kde pokračoval v práci na teoretické interpretaci experimentů, které by mohly naznačovat anomálie v teorii relativity. (cs)
- Joseph Carl Hafele (* 25. Juli 1933 in Peoria, Illinois; † 15. November 2014 in Loveland (Colorado)) war ein US-amerikanischer Physiker, bekannt für das Hafele-Keating-Experiment mit dem Astronomen zum Nachweis relativistischer Effekte auf den Gang von Uhren. Hafele studierte Physik an der University of Illinois mit dem Bachelor-Abschluss 1959, dem Master-Abschluss 1960 und der Promotion 1964. Als Post-Doktorand war er Mitglied des Los Alamos National Laboratory. Hafele war von 1966 bis 1972 Assistant Professor an der Washington University, wo er bis 1977 blieb. Danach war er bei Caterpillar als Ingenieur. Er war von 1985 bis 1990 Assistant Professor am und gleichzeitig von 1987 bis 1990 NASA Summer Research Fellow. Ab 1991 war er an der . Das Hafele-Keating-Experiment wurde im Oktober 1971 ausgeführt mit vier Atomuhren, die an Bord von Flugzeugen einmal westwärts und einmal ostwärts um die Welt flogen. Danach wurde ihre Zeitanzeige mit der von synchronisierten Atomuhren verglichen, die im United States Naval Observatory (an dem Keating seit 1966 in der Abteilung Zeitmessung angestellt war) waren. Hafele war Mitglied der American Physical Society und der American Association for the Advancement of Science. Er war seit 1958 verheiratet und hatte vier Kinder. (de)
- Joseph Carl Hafele (25 July 1933 – 15 November 2014) was an American physicist best known for the Hafele–Keating experiment, a test of Einstein's theory of general relativity. Hafele was an apprentice welder when he was drafted to serve in the army during the Korean War. After the war, he obtained undergraduate and graduate degrees from the University of Illinois at Urbana-Champaign, earning his PhD in 1962 with a thesis on a topic in nuclear physics. He married Carol Hessling in 1958, and they had four daughters. He worked at Los Alamos National Laboratory, and then Washington University in St. Louis from 1966 to 1972. In 1971 he performed the Hafele-Keating experiment along with astronomer Richard E. Keating. He later worked at Caterpillar, Eureka College, NASA (Langley Air Force Base), and Christopher Newport University. After his retirement in 1996 he and his wife lived in Laramie, Wyoming, where he continued theoretical work on the interpretation of experiments that might indicate anomalies in relativity. He died in 2014 during surgery. (en)
- Joseph Carl Hafele (né le 25 juillet 1933 à Peoria dans l'Illinois - mort le 15 novembre 2014 à Loveland dans le Colorado) est un physicien américain. Il a travaillé dans le domaine de la physique nucléaire et de la relativité générale. On lui doit notamment l'expérience de Hafele-Keating qui en 1971 a permis de tester la dilatation relativiste des durées en présence d'un champ gravitationnel. (fr)
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