Physics Help Forum round trip speed of light

 Special and General Relativity Special and General Relativity Physics Help Forum

 Jul 17th 2008, 10:42 PM #1 Junior Member   Join Date: Jul 2008 Posts: 14 round trip speed of light Please tell me what is the importance of the concept of two way (round trip) speed of light in the current use of SRT.
Jul 25th 2008, 05:50 AM   #2

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 Originally Posted by evabern Please tell me what is the importance of the concept of two way (round trip) speed of light in the current use of SRT.
I had to do some searching to figure out what you likely mean here. For confirmation: you are referring to the measurement of the speed of light here, right?

-Dan
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Jul 26th 2008, 09:23 PM   #3
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 Originally Posted by topsquark I had to do some searching to figure out what you likely mean here. For confirmation: you are referring to the measurement of the speed of light here, right? -Dan

Jul 27th 2008, 10:33 AM   #4

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Out of curiosity: what was the solution? (For that matter, what was the exact problem?)

-Dan
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Jul 28th 2008, 02:39 AM   #5
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round trip and one way trip speed of light

 Originally Posted by topsquark Out of curiosity: what was the solution? (For that matter, what was the exact problem?) -Dan
my question was if the equation
2/c=1/(c(f)+1//(c(b)
where c represents the two way speed of light, c(f) and c(b)representing the forward speed of light in the positive direction of the OX axis and the velocity of the same light signal; in its negative direction, after reflection on a stationary mirror respectively, has some physical motivation. in particular it leads to the conclusion that if c(f) is infinite the reflected one propagates with speed c/2.
my friends answer was and i fully aggree with it:
Yes, if you believe in aether. No, if you do not. But there's no evidence to prove the existence of aether (though none to disprove it either), and even if aether did exist, it conveniently censors itself so it can't be detected, which makes it a rather pointless concept.

Jul 28th 2008, 02:12 PM   #6

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 Originally Posted by evabern my question was if the equation 2/c=1/(c(f)+1//(c(b) where c represents the two way speed of light, c(f) and c(b)representing the forward speed of light in the positive direction of the OX axis and the velocity of the same light signal; in its negative direction, after reflection on a stationary mirror respectively, has some physical motivation. in particular it leads to the conclusion that if c(f) is infinite the reflected one propagates with speed c/2. my friends answer was and i fully aggree with it: Yes, if you believe in aether. No, if you do not. But there's no evidence to prove the existence of aether (though none to disprove it either), and even if aether did exist, it conveniently censors itself so it can't be detected, which makes it a rather pointless concept.
Note that if cf and cb are equal then we get an aether concept that predicts special relativity, however we can certainly attribute such an equation with an aether that is more general than that.

I guess I'm using a complicated way of saying that I agree with your friend.

Thank you for elaborating.

-Dan
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