HafeleKeatingeksperimentet
The Hafele–Keating experiment, sometimes referred to as HafeleKeatingeksperimentet in Scandinavian usage, was a 1971 test of time dilation predicted by special and general relativity. Researchers J. C. Hafele and Richard Keating carried atomic clocks on commercial airliners to compare their rates with identical clocks kept on the ground.
Procedure and setup: Four caesium-beam atomic clocks were used. Clocks were flown around the world on two
Results: The experiment found small deviations in the airborne clocks relative to the ground reference that
Significance: The Hafele–Keating experiment was among the first direct laboratory-scale confirmations of relativistic time dilation using