Originally Posted By: Orac
These days we measure time shift of lifting something as little as a foot (http://www.wired.com/wiredscience/2010/09/ordinary-relativity/) and expect that to be up by probably ten fold by the end of next year.

I loved that experiment. Heck I loved the one back in the 60s when HP brought out their commercial Cesium Beam Atomic Clock, the first commercial atomic clock. As a publicity stunt they set up 2 of the clocks and compared them very carefully. They they bought an air line ticket around the world for one of them. When it got back they compared them again, and they showed once again that Einstein was right. It was great.

Bill Gill

C is not the speed of light in a vacuum.
C is the universal speed limit.