Stethoscope

Purpose

To hear with a stethoscope, and to experience the time resolution between the two ears.

Equipment

Stethoscope

Images

h5-03

Description

Listen to a heartbeat or breathing with the stethoscope. Gently tap the surface of the tube as you move your hand back and forth along the tube; the time between when the tap arrives at the two ears creates the effect of the sound appearing to move laterally.

References

G. P. Brewington, Simple Demonstrations of Auditory Perspective and Acoustic Regeneration, AJP 6, 214-215 (1938).