Interesting Things with JC #1584: "The Hafele–Keating Experiment" – In 1971 four atomic clocks boarded commercial airliners and circled the Earth. When they returned, the clocks no longer matched those on the ground. The difference was measured in billionths of a second and confirmed Einstein’s prediction that motion and gravity change time.

Interesting Things with JC #1584: "The Hafele–Keating Experiment" – In 1971 four atomic clocks boarded commercial airliners and circled the Earth. When they returned, the clocks no longer matched those on the ground. The difference was measured in billionths of a second and confirmed Einstein’s prediction that motion and gravity change time.

Interesting Things with JC #1584: "The Hafele–Keating Experiment" – In 1971 four atomic clocks boarded commercial airliners and circled the Earth. When they returned, the clocks no longer matched those on the ground. The difference was measured in billionths of a second and confirmed Einstein’s prediction that motion and gravity change time.

1584: "The Hafele–Keating Experiment"

Interesting Things with JC is a new podcast mini series, with highlight on some of the more interesting historical stories, current events as well as under-told stories.

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Interesting Things with JC is a new podcast mini series, with highlight on some of the more interesting historical stories, current events as well as under-told stories.

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1584: "The Hafele–Keating Experiment"

1584: "The Hafele–Keating Experiment"