On Tue, 13 Mar 2007 00:53:53 GMT, "colin"
wrote:



no I just find it fascinating that its so difficult to arrange an experiment
that measures it in one direction only,
that I dont think anyone has done it. everything seems to be extrapolated
form round trip experiments.

It's easily done with two cesium clocks; just apply money. Heck, two
rubidiums would work.

HP once bought two airline seats around the world, one for an engineer
and one for a battery-powered cesium clock. They synched two clocks
and then flew one around the world. The resulting time error was
consistant with relativity.

John