Just one more example of the continuing series of unrelated experiments that show just how right Einstein was. Last year there was the experiment where some experimenters built 2 new atomic clocks that were much more stable than any before, which is amazing itself, and then used them to test
GR. First they set them up in adjacent rooms and carefully compared their times. Then they jacked one of them up a few inches and compared their times again. And they were different, by just the amount that GR predicted for that small change in the gravitational potential. Then they slid one of them back and forth fairly slowly. And once again their times varied according to the rules of relativity.
And then there were the Voyager spacecraft. As they approached the edge of the solar system they weren't moving the way they were expected to. So some people suggested that gravity worked differently in interstellar space. Wrong, there was just now a study that showed that the problem was due to the heat generated by the spacecraft. So once again, Einstein got it right.
Bill Gill
