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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 ...
In 1971, the Hafele (ha-fi-la) and Keating Experiment flew four atomic clocks on airplanes going around the world and compared the time-shift from those clocks to the atomic clock at the National ...
Gravitational time dilation has been experimentally measured using atomic clocks on airplanes, such as the Hafele–Keating experiment. The clocks aboard the airplanes were slightly faster than clocks on the ground. The effect is significant enough that the Global Positioning System's artificial satellites need to have their clocks corrected. [13]
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
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.
The velocity time dilation is explained by Anderson in terms of the tau factor which decreases closer and closer to zero as the ship approaches the speed of light—hence the title of the novel. [48] Due to an accident, the crew is unable to stop accelerating the spacecraft, causing such extreme time dilation that the crew experiences the Big ...
On the other hand, the Hafele–Keating experiment confirmed the resolution of the twin paradox, i.e. that a clock moving from A to B back to A is retarded with respect to the initial clock. However, in this experiment the effects of general relativity also play an essential role.