Recent content by topspin1617

Well, semidirect product really is the right way to do it... the theory guarantees a unique (up to isomorphism) non-abelian group of order pq, whenever p<q are primes with p|(q-1). Forgoing that, I guess direct calculations are the only way to go. I suppose you could write out a...

Yeah, the second one, as you rephrased, is pretty much the question in the book, only stating in one frame. As my last post said, I thought it odd, after writing my solution, that the question didn't just say every inertial frame. In my experience with math, they always ask for the most general...

Ah. Yea, I see what's happening. I actually did a correct calculation for myself earlier, and just forgot to cancel a 3/2, so I was getting a 3c/2 instead of c haha. I guess this is the part of relativity that is a bit odd, because all intuition would tell me that if I am moving in the...

Hello PAllen, thanks for your reply! Regarding your final statement, I'm not questioning the existence of a signal; I was just wondering if it was possible for one signal to be perceived as traveling at less than the speed of light in one frame and faster in another. Because, even though the...

Hello everyone, this is my first question here. I'm a mathematics student (actually pure math), but have recently found myself interested in learning about physics. I've started reading Introduction of Special Relativity by Rindler; I actually have no background in mechanics or basic physics...