5 ms·
A question for you since you seem to know about light in media: my understanding is that the speed of light is also the speed events propagate through spacetime
by rolleiflex 13y ago
A question for you since you seem to know about light in media: my understanding is that the speed of light is also the speed events propagate through spacetime. So, considering a galaxy made entirely out of pure crystalline diamond, would events propagate slower in that galaxy? In other words, does time itself slow down under those circumstances, does it not change?
It could also be that the speed of light is constrained by the speed events propagate through spacetime and not the other way around, but I am most probably thoroughly confused.
- eru 13y ago> So, considering a galaxy made entirely out of pure crystalline diamond, would events propagate slower in that galaxy? In other words, does time itself slow down under those circumstances, does it not change? It doesn't change. See e.g. https://en.wikipedia.org/wiki/Cherenkov_radiation https://en.wikipedia.org/wiki/Cherenkov_radiation where electrons travel faster than the speed of light in a specific medium.