Hi, here's something seemingly rather simple that has puzzled me a bit.
If i have a collection of thermal neutrons. They will follow the Maxwell-Boltzmann distribution. I guess this is a pretty good approximation for the energy spread of thermalized neutrons in water if one ignores absorption...
Okay thanks for the tips guys. Waiting for the next application round is probably a bit risky though because judging from what I've seen from friends around europe and north america the picks can be a bit arbitrary. I've seen guys who outsmart me by a mile not get anything while similar loons...
Thanks man. Too bad there clearly is no coherent list of places who can consider spring admission.
Although i guess starting of with checking places not requiring pgre (which seem to be very few) is a good start :)
Hi I'm graduating for a european physics/applied maths M.Sc. around September. I thought about applying for US grad school already during last autumn but I couldn't be sure I would be done in time, and my application would really have lacked the final beefing up of good results in the really...
Homework Statement
Show that if r = \sqrt{x^2 + y^2 + z^2} then
\nabla^2 \left( \frac{1}{r} \right) = -4 \pi \delta^3(r)
Homework Equations
I've heard Green's theorem should help me... not quite certain how.
The Attempt at a Solution
I took the divergence of the left hand side...
Even though this is old I'll reply for random googlers.
Your form is correct, however to get to the wikipedia form which is more usable in many analytical things you just need to look up the definition of the curl through levi civita symbols.
Because if you subtract the two first terms in the...
Hello, I am trying to do some self-studying in Byron & Fuller mathematical methods for classical and quantum physics. I have slightly ran aground on this one task of finding 3d Fourier transforms and I can't find the info in the book itself to free me. Google has neither been very fruitfull...