Cecil Moore wrote:

Jim Kelley wrote:

If the length of the second were different, then so would be the speed
of light ...


To see why that is false, refer to Lorentz's
transformation for time at a velocity near
the speed of light. Time can vary all over
the universe while the speed of light remains
constant (at least by definition :-). Since
time is one dimension for the speed of light,
the problem is self-correcting.

If the second were "smaller", then light could obviously no longer
travel 3x10^8 of our meters in one of them. Try not to lose track of
the reference frame, Cecil. (Remember, it's the one in which the red
shift is being measured).

73, jk