Recent content by 1100f

I agree The discussion was about the nature of quantum numbers (not of l and m) and someone said here that they come from symmetry. The example that I gave was to show that not only l and m come from symmetry principles but also n.

If your hamiltonian does not have rotational invariance, it will not commute with the angular momentum, so that the hamiltonian eigenstates are not eigenstates of the angular momentum. BTW. In the hydrogen atom, not only l and m come from symmetry but also n, since in the Kepler problem, the...

The question was not why light goes at speed of light, but why light goes at c? Although c is called "the speed of light" it is not only the speed of light but of other "things" also. Since, historically, light was the first thing to be discovered that goes at c, from this c got its name. A...

Same as the electron

And I thought that in general relativity, ds2 = 0 for light.

You began well by saying that p is of the order of hbar/Δx. Instead of finding the velocity of the electron just compare pc with mc^2. Why that? Remember that E = γmc^2 and p = γmv. So that p/E = v/c^2 and if the velocity is of the order of c, you get E is approximately equal...

The energy level of the hydrogen atom are used by using the lentz vector. When you look at the kepler problem, since the potential (1/r) is a central potential, angular momentum is conserved. However, if you look at the classical solution of the bound states, the trajectory consists in an...

If they are identical, have the same mass and the same composition, how could they be of different color?

I like Schiff's book. A little old but very good

According to classical Maxwell's theory, an electron orbiting around the nucleus would radiate em waves. the frequency of these em waves would be the frequency of rotation of the electron around the nuclueus. The electron would loose its energy continuously and this would give a continuous spectrum

In any book on QFT, go to the QCD section, after the Lagrangian is written, the Feynman rules are given, including the Feynman rules for gluon-gluon vertex.

If you want to find flaws in the theory of relativity, please use what relativity says, not what your "common sense" says. Relativity says that you cannot suppose that initially he was moving away at a speed of 29979458 meters per second from the emitting body. So pleas don't start with that...

Why is it a nonsense?

What you describe here is not a direct interraction between two photons but an interraction between photons by intermediate states. When I said that there is no interraction between photons, I meant that you do not have any vertex that includes just photons. And if you look at the lowest order...