Class 26, Wednesday, March 11, 2015
The angular size of the object we view, provided the small-angle-approximation holds, is
Thus, the closer the object is held to the eye, the larger it appears.
On the other hand, i
Class 22, Friday, February 27, 2015
Reading: chapter 30
What happens when light hits various objects?
When light hits an object, it no longer continues on its original straight-line path. One
possibility is that it turns around and continues on
Class 23, Monday, March 2, 2015
Example 1. A laser beam is aimed at a 1cm thick sheet of glass (index of refraction
n=1.5) at an angle of 30o above the glass surface. A) What is the beams direction of
travel in the glass? B) What is its direction in the a