Hi guys,
I'm currently working on a project related to Faraday instability, and I of course came across the dispersion relation for capillary-gravity waves, i.e.
ω² = tanh(kh)(gk + σk³/ρ) .
Now I would need to numerically solve this relation for the wavenumber k as a function of depth h...
While I'm at it, I'd have another question (I promise it's the last one).
I know about R. Beth experiment in 1936 which confirmed the photon spin value of 1, although technical details are far too difficult for my understanding, but is there another experiment which confirmed this value while...
Well, I found my mistake, and you are right. Very dumb mistake, by the way. I was adding the magnetic quantum number m_s posing - s \leq m_s \leq s and adding l and m_s. I did again the calculation with the right tools and without being completely dumb, and found Landau-Lifschitz result...
I'm far from a specialist in the field, but the easiest way I know is taking the Newtonian limit of the EFE and comparing it with Poisson law Δ\phi= 4\pi G\mu .
I don't precisely remember all the demonstrations, but "Newtonian limit" implies :
- Being in the weak field approximation, where you...
That I know, it's also closely related to the calculation rules of the fine and hyperfine states, but I don't see the point here, nothing would (in appearance I guess) prevent me from stating l = 0 and s = 0, I would still have j = 0...
I can imagine (even if it seems hazardous to me because...
Good morning everyone ! I've been reading discussions on PF for a long time, but here I'm stuck on a little problem that really annoys me and I couldn't find answer anywhere, so I guess it was time to register. :>
I've been focusing on quantum electrodynamics for a couple of weeks now as part...