3 ms·
T is indeed independent from R, but how do we know that F and R are also independent? Would theory fall apart if we try to model F as microscopic modulations of
by ry454 6y ago
T is indeed independent from R, but how do we know that F and R are also independent? Would theory fall apart if we try to model F as microscopic modulations of R?
I'm trying to look at R and F from the signal processing point of view: if we apply Fourier transform to both, we'd see that R is described by low frequency band (planetary scale distortions), while F would be ideally described by a high frequency band.
- TeMPOraL 6y agoI wonder about something different - if R and F are independent, and R also tells you the shape of space, what would happen if EM and gravity waves crossed through each other? My guess is the EM wave would be modulated somehow, within the intersection volume, as if crossing into a different matter medium, while gravity wave would be unaffected.
- pa7x1 6y agoBoth effects can occur; GW <-> EMW. You can search for Gertsenshtein Effect, there is also this old paper by Zel'dovich: http://jetp.ac.ru/cgi-bin/dn/e_038_04_0652.pdf http://jetp.ac.ru/cgi-bin/dn/e_038_04_0652.pdf
- tobinfricke 6y agoThat's correct. The "shape of space" can act as a lens for light. Even in static situations this can be quite interesting: https://en.wikipedia.org/wiki/Einstein_ring#:~:text=An%20Einstein%20ring%2C%20also%20known,to%20come%20from%20different%20places https://en.wikipedia.org/wiki/Einstein_ring#:~:text=An%20Ein.... It's possible that you could observe a kind of "shimmer" in the position of background stars as a gravitational wave passes between you and them. In fact there is an attempt to detect gravitational waves this way through pulsar timing: https://en.wikipedia.org/wiki/Pulsar_timing_array https://en.wikipedia.org/wiki/Pulsar_timing_array