Soap Film Oscillations

Purpose

To demonstrate standing waves in a two-dimensional medium.

Equipment

Rectangular and circular frames, soap solution and flat pan.

Suggestions

This requires a good deal of practice and patience.

Setup Time

5 min

Images

g4-11

Description

A large rectangular form and a circular form are provided for producing soap films using a specially-formulated soap solution. Careful movement allows production of various standing waves.

References

Marvin Ohriner, Spectacular Bubbles, TPT 7, 456, (1969).Bernard Sharkey, Soap Films, TPT 3, 67, (1965).