Recent content by zumbo1

What is axial thickness? Is it the thickness between the two principle planes of a lens or is it just the thickness of the lens? I need the correct defintion to finish a problem.

There is a laser beam with a diameter D, in air that strikes a flat smooth piece of glass with angle @ and index of refraction of n. I need to derive and equation for the diameter of the beam in the glass wiht respect with n D, and @. I want to know why the beam's diameter would be effected by...

How do you edit posts? Anyway I end up getting (20+16cos(wt))^1/2 for my magnitude.

ψ(y,t)=2*e^(iky)*e^(iωt) + 4*e^(iky)*e^(-iωt) Here is my work for the problem 2e^(iky)*(e^(iωt)+2e^(-iωt)); 2e^(iky)*(cos(ωt)+i*sin(ωt)+2cos(ωt)-2i*sin(ωt)); 2e^(iky)*(3cos(ωt)-isin(ωt)) How would you continue this problem?

The Princeton review would be good if all you wanted it was for Physics B, I took both and the book didnt help with Physics C.