Recent content by orangepeelsnice

sweet, thank you

Hello everyone! I have a question about the possible transitions for a hydrogen atom from an excited state back to the ground state. Lets say that a H atom is in the n = 4 excited state, what are the possible transitions back to n = 1? I thought the answer was: 4 -> 3 4 -> 2 4 -> 1 but then I...

the obvious answer is to say it the E = Eo+KE = 600 MeV, just making sure

We are giving a particle with mass 400 Mev/C2 and 200 MeV KE. What is the Energy of the particle? Is it 600 MeV or 200 MeV?

@PeroK I see that an electron at rest has zero momentum and clearly would violate conservation of momentum if it started to recoil and emit a photon. in fact, it would doubly violate the the conservation of momentum, because now the electron and the photon have momentum when initially there was...

One has kinetic energy, one does not?

The Process of a single, isolated electron initially at rest emitting a photon and recoiling in the opposite direction clearly violates the conservation of energy. On the other hand, a single, isolated, moving electron has kinetic energy, and can easily emit a photon. Or can it? Explain.