On Tuesday, October 13, 2020 at 12:06:44 AM UTC-6, Brent wrote: > > > > On 10/12/2020 10:20 PM, Alan Grayson wrote: > > > > On Monday, October 12, 2020 at 11:11:33 PM UTC-6, Brent wrote: >> >> >> >> On 10/12/2020 9:56 PM, Alan Grayson wrote: >> > Why is it that in SR a stationary clock appears to advancing at a more >> > rapid rate than a moving clock, and vice versa -- so the effect is >> > relative or symmetric, not absolute -- whereas in GR the effect seems >> > absolute; that is, a ground clock actually advances at a slower rate >> > compared to an orbiting clock? AG >> >> It's the same as the twin effect. The clock on the ground is following >> a non-geodesic path thru spacetime and so measures less duration, while >> the orbiting clock is following a geodesic path. In relativity the >> minus sign in the metric means that the path that looks longer projected >> in space is shorter in spacetime. >> >> Brent >> > > How does gravity cause the difference between what the theories predict? AG > > > It curves the time axis (mainly). Don't you have a copy of Epstein's > "Relativity Visualized"? > > Brent >
I do. And I understand your remark about the Twin Paradox. But I was wondering; do the calculated results, that is the differential in clock rates, differ between SR and GR? AG -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/cb9ef3c6-15ad-41b3-81d3-4dd530857241o%40googlegroups.com.
