Recent content by DonnerJack

Hi, Can someone explain to me why do we actually need the Interaction/Intermediate representation? In my past, each course in QM touched it only for a few minutes and then it got... forgotten. Can someone please give me an example as to how (and when) it is used (and a good reason why)...

Hi, I found out that as a rule, almost everywhere, thermodynamics and statistical mechanics are taught, well... badly. So most of the students (again, only from MY experience) stay with only obscure ideas about what one can do with thermodynamics/statistical mechanics and what is it good for...

I know that n(t=0)=Tetha(-x)*n0 (the half of the box is chosen to be x=0) and n(t=inf)=Const. in the whole box.

But... 1. Nope. only vacuum in the other part of the box. 2. OK. if I consider what you said (molecular flow) - how do I state the boundary conditions? I can't seem to understand how to make that step. after I have the conditions it's either I know by heart how to solve the diff. eq. or I...

Nope Didn't left anything out. That's how the Q was stated. IF I consider the gas to be highly dilute - would it be diffusion, or should I consider the other limit?

Maybe this will help... 1-Why are the distinct particles distributed in this law in ALL LAYERS (Maxwell-Boltzmann) (more than one particle can take 1 cell)? W=N! [Pi Product over i] ((gi^Ni)/Ni!) i is the layer number, We have N distinct particles in the whole system, Ni Particles in the...

Hi all, I'm abit confused about diffusion - I can't seem to understand how to translate the question at hand to equation (from there it is only math...). I have a box with a gas at concentration n0 in it, which is divided from the rest of the box where you have vacuum (for simplicity, the...