Recent content by FarticleFysics

When you say back EMF do you mean the field opposite of the induced electrical field from the magnetic field, or the induced field itself?

I'm currently in the middle of finals, but those resources look very interesting. Can't wait to check them out and thank you for your help!

Yes, I did the derivation of the eigenvalues as well. Thanks for your help!

When solving for the spherical harmonic equations of the orbital angular momentum this textbook I'm reading.. Does this mean that there must be a max value of Lz which is denoted by |ll>? Normally the ket would look like |lm>, and since m is maxed at m=l then |ll> is the ket consisting of the...

Bill, Is it correct in saying that |bi><bi| is a projection operator? I'm thinking that the projection operator would give us an eigenvalue projected in the 'direction' of some given eigenstate (mathematically speaking) since it is the inner product, but I feel like I am missing something...

Homework Statement What are the possible results of the measurement of the sum of the x and z components of the spin angular momentum of a spin-1/2 particle? Sx = Spin angular momentum operator x Sz = Spin angular momentum operator x Homework Equations The Attempt at a...

Oh yeah.. haha thanks.

I'm trying to practice some operator algebra.. Solve [H,x] where H is the Hamiltonian operator, x is position operator, and assuming one dimensional potential energy, U(x). I know the commutator comes out as -ih_bar(p_op)/m Here is my work so far. [H,x] = Hx - xH note: H = [...

Homework Statement A one-dimensional harmonic oscillator is in the ground state. At t=0, the spring is cut. Find the wave-function with respect to space and time (ψ(x,t)). Note: At t=0 the spring constant (k) is reduced to zero. So, my question is mostly conceptual. Since the spring...