HW

Homework for Wednesday - note that we are having a quiz on Friday.  Start studying now.

1.  Think about today's informal lab again.  You have an initial angle of 60 degrees (coming from air) and are refracted to 40 degrees inside a block of some mystery material.

a.  Draw this scenario.
b.  What is the index of refraction of the mystery stuff?
c.  Now that you know the index of this stuff, what is the speed of the light inside of it?
d.  What happens to the wavelength of light inside the stuff?

2.  Research the following topic, bringing back a short definition (that you understand):  What is the focal length of a lens?

3.  If you have time, read about fiber optics and how they relate to total internal reflection (and/or the critical angle).

4.  Review the optional homework (if you did it).  There will likely be a trig question on the quiz - something that has to do with a right triangle.