posted by frank .
does anyone know who conducted the experiment or a credible description of the experiment that helped prove Einstein's thought experiment: the twin paradox?
as in the experiment in which one cesium-beam atomic clock stays on Earth, while another one takes flight and the time is compared between the two when the clock returns.
(not the experiment by Hafele and Keating)
Try Googling "cesium-beam atomic clock experiment" or similar. Wikipedia is also a good source for quick facts.