Program: Lenz
By: Ben Axelrod

    This program can be used for mirrors and thin lenses.  It will solve
the mirror equation, find the magnification, and also solve the lens 
makers equation.  Great for physics!  These equations arent very hard 
to solve, but they are pretty annoying.  Thats why I wrote this program.

    To use, just select which variables you have from the menu.  NOTE: in
this program P is the distance to the object and Q is the distance to the 
image.  Remember to put minus signs where needed when you enter your 
values or you wont get the correct answer!


Here are the equations used:

1/P + 1/Q = 1/F

(N-1)(1/R1 - 1/R2) = 1/F

