Wow... Irrelevant, but that nicksauce guy who started the other thread is a good friend of mine in RL. I'm going to call him now!
Ha, small world.
Oh, and I understood the (false) justifications, thanks.
Given:
f(x)=\delta(x-a)
Other than the standard definitions where f(x) equals zero everywhere except at a, where it's infinity, and that:
\int_{-\infty}^{\infty} g(x)\delta(x-a)\,dx=g(a)
Is there some kind of other definition involving exponentials, like:
\int...
Well, if t is negative, that means the event is in the past, for the observer, right? Doesn't that mean he never observed it? I figure it doesn't mean the same thing as saying it's 3 meters in the negative x direction, as you can look back and see it, but if it's the past.
Although, now that...
See, I've just started taking this class, and evne though I've already read books by Martin Gardner and Brian Greene, I don't understand any of this stuff... well, not any. But my math seems to be wrong.
I have 2 frames, S and S', such that t=t'=0 and x=x'=0.
Event A occurs in frame S at...