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EvC Forum ⇒ Science Forums ⇒ Big Bang and Cosmology ⇒

Is the speed of light constant between galaxies?

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Author Topic:   Is the speed of light constant between galaxies?
Percy
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Posts: 22479
From: New Hampshire
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Message 45 of 66 (680211)
11-18-2012 1:35 PM 		Reply to: Message 35 by cavediver
11-16-2012 6:53 PM

Re: Constant Speed of Light
I thought the path followed by both matter and energy simply followed the curved shape of space - light doesn't?
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--Percy
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Percy
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Posts: 22479
From: New Hampshire
Joined: 12-23-2000
Member Rating: 4.7

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Message 48 of 66 (680253)
11-18-2012 9:16 PM 		Reply to: Message 46 by cavediver
11-18-2012 1:59 PM

Re: Constant Speed of Light
When you say "massive particle", is that any particle with mass?
​
Do the different paths through Reimannian space correspond to different paths in Euclidean space? In other words, we can observe massive and massless particles following these different paths?
​
--Percy
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Percy
Member
Posts: 22479
From: New Hampshire
Joined: 12-23-2000
Member Rating: 4.7

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Message 53 of 66 (680357)
11-19-2012 8:52 AM 		Reply to: Message 52 by cavediver
11-19-2012 7:07 AM

Re: Constant Speed of Light
NN, SG and CD,
​
Thanks for the info, one more question. CD's answer about needing "some decent source of curvature" hints that we don't yet have experimental or observational confirmation of massive and massless particles following different paths - is that true?
​
--Percy
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