If we start from "light always takes the easiest path between two points" (big if) it follows as a natural consequence
Like a lifeguard trying to reach a swimmer in the ocean, run too much on the beach and the path is too long, too long in the water and you swim too slow
If we start from "light always takes the easiest path between two points" (big if) it follows as a natural consequence
Like a lifeguard trying to reach a swimmer in the ocean, run too much on the beach and the path is too long, too long in the water and you swim too slow