PURPOSE: To demonstrate reflection from a plane mirror.

DESCRIPTION: This demonstration shows that the angle of incidence is equal to the angle of reflection. Use colored slits to show that this is good for all colors. (There is no chromatic aberration in a reflecting telescope.)

SUGGESTIONS: A convex lens is used to produce the parallel beam of light rays shown in the photograph.

REFERENCES: (PIRA 6A10.10)

EQUIPMENT: Optical board with plane mirror. Optical Board Configuration

SETUP TIME: None.