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Physics Lab Demo

Home H. Sound H2. Wave Properties Of Sound H2-21. Audible Young's Experiment - Group Listening

H2-21. Audible Young's Experiment - Group Listening

Purpose

To demonstrate interference of sound with two coherent sound sources.

Equipment

Loudspeakers on rotating boom permanently mounted on oscillator-amplifier.

Images

H2-21

Description

The oscillator-amplifier is set to approximately 3000 Hz, with identical signals being applied to both loudspeakers. Rotating the loudspeakers past the listeners allows them to observe the interference pattern by hearing the alternating maxima and minima in the intensity pattern.

References

Ralph Baierlein and Vacek Miglus, Illustrating double-slit interference: Yet another way, AJP 59, 857 (1991).

H. Sound

H. Sound

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