@401matthall @KellyLepo The speed of light _in vacuum (c)_ is the speed limit- it changes as it passes through different media, so the speed of light through water is about 0.75c, through glass about 0.66c. A particle travelling faster than those speeds through those media would produce Cherenkov radiation, as described above.
I'm sittin' here with my mouth open like a gold fish.
I had _no_ idea. That's fascinating.
And in hindsight I kinda feel like I intrinsically or empirically understood that light slowed down through a medium but I don't think it was a clear distinct piece of knowledge.
I'm genuinely gonna have to sit here with this thought and let it bang around my head for awhile.
Thanks for sharing! I really appreciate it! <3
This is so cool, one of my favorite YouTube channels has a new video about the Nobel prize winning discovery that relies on Cherenkov radiation!
https://www.youtube.com/watch?v=eb8x2tz_pgc