Re: michelson morley experiment

vern@xxxxxxxxxxxx wrote:
I believe this is an important issue and one that I have been
considering in relation to the laser experiments done by H. Webster
Kehr. Tom, would you agree that if you have a stationary laser on the
surface of the Earth pointing at a stationary target on the surface of
the Earth, that irrespective of the motion of the Earth at
approximately 370 kilometers per second linearly towards the
constellation Leo, as evidenced by the CMBR, the laser beam would still
be pointed directly at the target in order to hit it and the laser beam
does not leave the laser at an angle?

In the frame of the earth surface at the location of the laser, the light leaves the laser straight down its centerline.

Insofar as the non-inertial motions of the earth can be neglected during the flight time of the light, the image at the target will remain motionless, 24 hours a day 365 days a year (assuming true stability in mounting and the optical path). Indeed, since the non-inertial motions of the earth are so steady, they will be accounted for during setup, and it's really the variation in them that matters (e.g. the beating between rotational and orbital motion).

That 370 km/s is roughly 0.001 times the speed of light, and the angle relative to the CMBR dipole=0 frame varies diurnally -- people would notice if light danced around by that milliradian as the earth turned: surveying over just 10 meters would be off by a cm! This does not happen.


Tom Roberts tjroberts137@xxxxxxxxxxxxx
.

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