From Newsgroup: sci.physics.relativity

Maciej Wo+|niak wrote:

https://en.wikipedia.org/wiki/Second As seen, the definition of second
loved so much to be invoked by relativistic morons - wasn't valid in the
time when their idiot guru lived and mumbled. Up to 1960 it was ordinary 1/86400 of a solar day, also in physics.

it has nothing to do with, a second from a mechanical watch makes the
point, also in relativity, but you have to undrestand it first. In short,
a second as quantity does not matter, once you assume it's fixed

the physics are still there if say, a 2 sec is expected to make 1 sec. The interval will always be delta_t = t_1 - t_0.
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