Visit http://ilectureonline.com for more math and science lectures!

In this video I will explain how in 1971 the Hafele-Keating experiment used a series of HP 5661A Cesium beam atomic clock to prove Einstein's special relativity that time does indeed slow down at high rate of velocity.

Next video in this series can be seen at:
https://youtu.be/6-qQfxQomC4