2.71/2.710  Optics

Syllabus is updated according to the current schedule !

Hi,

I posted HW4. The first problem in HW4 is due on Mar 9, Friday and the others are due on Mar 14, next Wednesday, because the first one is more important for the first quiz. :) Turn in your problem1  through the website or bring it to NE47-276.

In addition, I posted the solutions for HW1 and HW2. HW3 solution will be posted tomorrow.

Hi,

First, sorry for the confusion about HW1, Prob2 and late notice. The momentum means p = mv as usual, so the transverse momentum would be the component of the momentum along SA or BP.

I would like to suggest two ways to solve the problem.

First, you can assume that mass is constant. Then you will get " pseudo-Snell's law." Do this first.

After that, assume that "effective mass" changes; mi before the surface and mt after the surface. In addition, use "the energy conservation law." When you calculate the energy, neglect gravity. Then you will get the true Snell's law.

I will post a related-paper with a solution later.