Hi Bill, The effect of gravity on time is measurable and, for example, must be taken into account for operation of the global positioning system (GPS.) Searching for "GPS general relativity" should turn up some nice explanations.
John On Monday 16 February 2004 07:27, Bill Hooper wrote: > As far as I know, the relativistic effect of gravity on time (and other > measurements) is smaller than can be detected in the experiments that > define the units. When measurement precision reaches the state where it > is significant, the definitions will undoubtably (sp*) be amended to > include a statement such as "when measured in a zero gravitational > field". Does anyone know if this has been formally addressed yet?
