Recent content by Tschew

Disclaimer: I am currently studying this topic so this is all new to me at this point. As far as I am aware the derivation follows from assuming the up and down quarks to be massless and the heavier quarks to be non-existent. The Lagrangian is one of two massless fermions with the usual SU(3)...

Hi, this is a very late reply but I found your post as one of the first results in a google search and thought other people searching would find the following link interesting: Fourier Analysis in Polar and Spherical Coordinates...

Thank you very much for your reply. I'm finding it a bit difficult to find anyone doing things that really interest me. It seems that people either do numerical computations or string theory... Maybe I just haven't looked long and hard enough. Sorry for being so unclear. No I actually...

I would be very grateful for any tips, especially on #2, cheers!

Sorry for not being clear, I don't have a PhD and want to study towards one.

Dear All, I'm in the process of looking for a PhD position in Theoretical Physics but I'm unclear about a few things. 1) I still don't really know what I really want to do. The only thing I am sure of is that I want my research to help me in my understanding of ideas which I regard as...

okay, I think I got it! Ah well, what a stupid question that was. I figured it out.. now I just need to see what happens for even and odd harmonics and that'll be that. Thanks.

f(x) = cos(x) x from [-PI, 0] f(x) = -cos(x) x from ] 0, PI] I'm not sure how to deal with getting a Fourier series for this function. (don't bother explaining theory, I know that, just can't apply it in this case) Could anyone help me out?

URGENT. Simple satellite / rocket separation problem... is my thinking wrong? Rocket mass M-kM and satellite kM (k < 0) are separated by an explosion which releases energy Q and let's rocket M-kM come to a stop relative to the observer and satellite kM continue at velocity v. Initial velocity...

Thank you. Thanks for the reply. I noticed the minus sign in the ln() expression myself yesterday and got the result :o) -Tschew

Hi! I'm slightly stuck with an approximation of tmax, the time at which a ballistic projectile reaches maximum height. (projectile shot straigh upwards, no x motion) So, by integrating the motion equation m * dv/dt = -mg -bv (where b is an air drag constant) I've created: v(t)...