Science a GoGo's Home Page Forums General Discussion General Science Discussion Forum How far is it to that star?

I don't know the background sorry Bill well before my time but the first was 1972 as given in the link. I laughed at the buying seat tickets for Mr clock. It's been repeated and refined numerous times with ever increasing accuracy.

To be honest most big universities have the ability to do this experiment for there undergrads as part of a relativity coarse. They mostly use two atomic clocks and lift one up a few meters or up a building in a lift which is how it was done for me.

Mostly however this stuff is historic and of little interest as SR fits so heavily into QM it's not something seriously under any consideration of being wrong. All the "new" theories of everything like string theory etc all embody SR because of the mountain of support for it.