Time Flies Feature Summary
- From Physics Research
- Einstein's theory of special relativity says that a moving clock, when compared to a stationary clock, runs slow. And general relativity, his theory of gravity, says that the weaker the gravitational field, the faster a clock in that field runs. These predictions were tested in 1971 by flying atomic clocks around the world. Einstein's relativity theories correctly explained what happened.
To learn about a more accurate update to this experiment 25 years later, see Time Flies. Click on the image to see a photo of the atomic clocks in the updated experiment.
- image credit: André Karwath, Creative Commons; image source; second image courtesy of NPL
- Image URL:
- http://www.compadre.org/Informal/images/features/atomic clock jet plane.jpg
- November 1, 2011 - November 15, 2011