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Hafele and Keating aboard a commercial airliner, with two of the atomic clocks One of the actual HP 5061A Cesium Beam atomic clock units used in the Hafele–Keating experiment. The Hafele–Keating experiment was a test of the theory of relativity. In 1971, [1] Joseph C. Hafele, a physicist, and Richard E. Keating, an astronomer, took four ...
Results of the Frisch–Smith experiment. Curves computed for M N e w t o n {\displaystyle M_{\mathrm {Newton} }} and M S R {\displaystyle M_{\mathrm {SR} }} . If no time dilation exists, then those muons should decay in the upper regions of the atmosphere, however, as a consequence of time dilation they are present in considerable amount also ...
Joseph Carl Hafele (25 July 1933 – 15 November 2014) was an American physicist best known for the Hafele–Keating experiment, [1] a test of Einstein's theory of general relativity. [ 2 ] Hafele was an apprentice welder when he was drafted to serve in the army during the Korean War.
Hafele–Keating experiment, comparing the drift in cesium beam atomic clocks on airplanes. Hughes–Drever experiment, comparing energy levels of nucleons or electrons; Optical cavity tests, comparing laser frequencies; Pound–Rebka experiment, comparing clock rates to test gravitational redshift
Richard E. Keating (29 May 1941 – 5 Oct 2006) was an American astronomer best known for the Hafele–Keating experiment, [1] [2] a test of Einstein's theory of relativity [3] performed while he was working at the United States Naval Observatory.
Hafele-Keating experiment (1971): Joseph C. Hafele and Richard E. Keating show that atomic clocks flown around the world exhibit differences which are consistent with the predictions of special and general relativity. Scout rocket experiment (1976): confirms the time dilation effect of gravity.
Other precision tests of general relativity, [66] not discussed here, are the Gravity Probe A satellite, launched in 1976, which showed gravity and velocity affect the ability to synchronize the rates of clocks orbiting a central mass and the Hafele–Keating experiment, which used atomic clocks in circumnavigating aircraft to test general ...
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