Re: LIGO.
Tom Roberts wrote:
The no-gravitational-wave light beam is adjusted to give no output
from the interferometer when everything is settled down, and this is
modeled by computing the light's total phase difference over the path
length by integrating over all those atomic-sized inertial frames (in
practice one uses a coarser approximation), for each arm. The initial
phase delay is equal for the two arms, because that is the condition for
null output. When a gravitational wave comes by, those integrals will
change (one arm increases in total phase delay while the other
decreases), implying that the interferometer output will no longer be
nulled.
Is the phase delay measured by the spatial displacement of
interference fringes, or pulse time delay?
.
Relevant Pages
- Re: LIGO.
... Tom Roberts wrote: ... implying that the interferometer output will no longer be ... Is the phase delay measured by the spatial displacement of interference fringes, ... Maxwell of course had the advantage of already knowing the approximate velocity of electromagnetic radiation he did not have to assume it. ...
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(sci.physics.relativity) - Re: Light Sources Simultaneously in Multiple Frames of Reference
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(sci.physics) - Re: Light Sources Simultaneously in Multiple Frames of Reference
... In one beam, the light 'beats its way upstream and then downstream'. ... Both beams are effected by the 'aether' if such exists. ... The LENGTH contraction does not effect that arm. ... analysis utilizing a Michelson interferometer and Einstein's ...
(sci.physics.relativity) |
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