On Fri, Jan 12, 2018 at 11:06 AM, <[email protected]> wrote: For me, the problem is space vs spacetime. In LIGO, the recombined waves of > light show offsets due to different path lengths. So this seems to be a > differential distortion of *space *as the wave passes. So what has *time* > got to do with the phenomenon? AG >
The gravity wave changes the *time* it takes for light to go down those different paths, that's how we know the length i n *space* must have changed because the one thing that nothing can do, not even a gravity wave, is change the speed of light in a vacuum. So its best not to think of space and time as 2 seperate things, there is just spacetime. John K Clark -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
