Light waves that are reflected or refracted change direction, which means that the eye that sees them sees them coming from a direction that does not backtrack to the actual source of the light. Here...Light waves that are reflected or refracted change direction, which means that the eye that sees them sees them coming from a direction that does not backtrack to the actual source of the light. Here we explore some basic cases where the location of the apparent source of light differs from the actual location of the source of the light.
