To do so is to redefine the second on the moon.
That redefines the Watt, the Joule, the Newton, the Ampere, the Pascal, the Becquerel, etc.
It even makes a voltmeter read incorrectly.
Moon-meters would be different from Earth-meters.
Careful.
It even makes a voltmeter read incorrectly.
Moon-meters would be different from Earth-meters.
Careful.
This would have required to apply a relativistic correction to the measured frequency of any atomic clock, but it would have provided unit definitions independent of the position in the Universe.
However, before contemplating the idea of time keeping on other celestial bodies it was decided to define the second based on an atomic clock that works on the surface of the geoid.
I believe that this was a big mistake, because it ties all the SI units to the Earth and especially because it does not really avoid the use of relativistic corrections. Now the precision of the atomic clocks is so great that for most of them it is necessary to apply relativistic corrections depending on the altitude of the laboratory.
Thus, it is impossible to perform the suggested procedure. We don't (and probably can't) know what zero potential looks like.
Furthermore, we would probably measure those potential differences using clocks that rely upon the SI as presently defined.
Kinda feels like agreement on the definition of the Newton would be the difference between "guidance and propulsion systems worked perfectly" and "debris was scattered across the landing zone".[1]
[1] Not an astrodynamicist, but have done enough problems with inclined planes, pulleys, springs etc to know it's quite important to get the magnitude of the forces right.
That’s exactly what I want! takeMyMoney.jpg
If an independence movement on Luna gets hold, it might want to differentiate Luna from Earth, and introduce a "lunar foot" based on lunar people.