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speed of gravity = c |
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| Apr10-03, 01:45 PM | #1 |
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speed of gravity = c
it has been reported that the speed of gravity = c does this mean that an object traveling at c would not feel the efects of gravity?
ttayeg |
| Apr10-03, 02:11 PM | #2 |
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Mentor
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| Apr11-03, 03:51 PM | #3 |
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Right, the path of a photon is affected when it travels through an area of space-time that has already been curved by gravity.
However, if a photon were to pass through a relatively "flat" area of space-time and, after it had passed, a massive object (such as a planet) suddenly materialized in that space, the gravity from that planet would (theoretically) never effect that photon. The sudden appearance of the planet would send a huge gravity wave out in all directions, this wave would propagate at lightspeed, and never "catch up" to anything traveling at lightspeed the had already passed. |
| Apr12-03, 04:26 AM | #4 |
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Recognitions:
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speed of gravity = c
Greetings !
was reported to be something like 0.8 - 1.05 c. (This could be outdated or slightly inaccurate info.) More accurate tests are still required to make sure that reality "follows" the laws of theory. As for the question - since no particle with rest mass can reach c, it is somewhat pointless to ask "What if... ?" about this. Live long and prosper. |
| Apr16-03, 09:09 PM | #5 |
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Some would have also said it was pointless to ask "What if...there was no ether."[;)] If nobody asks, then nobody learns![8)] |
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