Refraction Flashcards

All 3 cards in this deck

From which line are the angle of incidence and the angle of refraction measured?

The normal — the line drawn at 90° to the boundary.

True or false? A wave travelling along the normal into a different substance changes direction.

False. It carries straight on, with no change of direction.

True or false? For light entering glass, the angle of refraction is directly proportional to the angle of incidence.

False. The angle of refraction increases as the angle of incidence increases, but not in proportion.