I agree I heard that mentioned on a science TV show about the history of clocks and on a program about relativity.
Quoting "John S. Ward" <[EMAIL PROTECTED]>: > 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? > >
