[ExI] The most accurate clock ever

William Flynn Wallace foozler83 at gmail.com
Mon Dec 3 14:25:39 UTC 2018

A bit on a tangent:  isn't it true that damming water has changed the
Earth's rotation?

bill w

On Mon, Dec 3, 2018 at 7:48 AM John Clark <johnkclark at gmail.com> wrote:

> On Sun, Dec 2, 2018 at 8:29 PM Brent Allsop <brent.allsop at gmail.com>
> wrote:
> Hi John,
>> Very cool and interesting.
>> But since it seems to me, the only way to judge the accuracy of something
>> like a clock, is to have something to compare it to, I always wonder: how
>> can we objectively know it is so accurate?
> There is no one true objective time but you can test a clock against
> something you already trust. If you trust Newton and he says the Earth's
> rotation should be slowing down due to the moon you can see if the clock
> can measure that, and if you trust Einstein who says the orbital speed of 2
> Neutron Stars should speed up because their orbit will decay due to
> Gravitational Waves you can see if the clock can measure that. And if you
> make a new clock you can test it against an old trusted clock and see which
> one agrees more with Newton and Einstein.
> John K Clark
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