- #1
Fernando Rios
- 96
- 10
- Homework Statement
- Find the path followed by a light ray if the index of refraction (in polar coordinates) is proportional to r^-2.
- Relevant Equations
- ∫nds
This is an example from a textbook. They show the following:
∫nds = ∫r-2*ds = ∫r-2*√((dr)2+r2*(dθ)2)
How do you obtain the expression for ds?
∫nds = ∫r-2*ds = ∫r-2*√((dr)2+r2*(dθ)2)
How do you obtain the expression for ds?