Re: LIGO.
dlzc wrote:
Bullion wrote:
What is a wave in space-time?
Good question. Would it be resolvable, in some part, in space-only?
No.
The LIGO interferometer mirrors are held apart with constant spacelike
proper distance by the inter-atomic force of their supports and beam
pipes. The lasers measure the distance between the mirrors along a null
geodesic. Their signal is the difference between the lengths of these
two geodesics. They usually describe this as a variation in the distance
between the mirrors (implicitly using c=constant all along the light path).
Tom Roberts
.
Relevant Pages
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(rec.motorcycles) - Re: LIGO.
... proper distance by the inter-atomic force of their supports and beam ... The lasers measure the distance between the mirrors along a null ... please explain what you meant by the "length" of each of the geodesics ...
(sci.physics.relativity) - Re: LIGO.
... proper distance by the inter-atomic force of their supports and beam ... The lasers measure the distance between the mirrors along a null ... please explain what you meant by the "length" of each of the geodesics ...
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(rec.motorcycles) - Re: Death can come from behind
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(rec.motorcycles) |
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