Refraction - Rod In Water

Purpose

To demonstrate refraction.

Equipment

Plastic water tank with mounted stick.

Images

l4-03

Description

The rod, inserted into the water tank and viewed from an angle, shows a discontinuity at the surface of the water. Insert the other end of the rod at an angle into the water; the rod looks bent when viewed at an angle.

References

R. C. Nicklin and W. C. Connolly, Rugged Refraction Demonstration, AJP 43, 112 (1975). Chris Emery, Refractive Puzzle, TPT 31, 413 (1993).