Oooh! Google "Sagnac" and you also get lots of trendy pseudoscience from sites like anti-relativity.com. What fun! --
On Feb 10, 2011, at 4:01 PM, Mark Calabretta wrote: > > On Thu 2011/02/10 07:18:53 -0800, "Tom Van Baak" wrote > in a message to: "Leap Second Discussion List" <[email protected]> > >> Yes, the radius of the earth is slightly dependent on latitude, >> perhaps that's what you're thinking about. But a clock at sea >> level at lat 0 will run the same as and a clock at sea level at >> lat 45 or lat 90 because that's what MSL is - the equipotential >> surface of the geoid. > > A clock at the equator has a tangential velocity of 500m/s > whereas for one at the pole it is 0m/s. The difference, > amounts to about 100ns/day as per your later calculations. > This is the Sagnac effect of Special Relativity. > > Regards, > Mark Calabretta _______________________________________________ LEAPSECS mailing list [email protected] http://six.pairlist.net/mailman/listinfo/leapsecs
