Chapter 2, Problem 2.65P

Consider a dielectric–dielectric charge–free boundary at the plane $z=0$. Construct a program that will allow the user to enter ${\epsilon }_{r1}$ (for $z<0$ ), ${\epsilon }_{r2}$ and $E_1$ and will then calculate $E_2$. (Just for fun, you may want to have the program calculate the angles that $E_1$ and $E_2$ make with a normal to the surface).