Doppler Ball

SKU: LA50-360 Category:

Doppler ball is a 90mm plastic ball with a PP3 battery powered tone generator and speaker inside. The ball can be safely whirled round in a large horizontal circle to demonstrate the Doppler effect.
Good output volume and variable pitch provide all that is required for a dramatic demonstration of the Doppler shift associated with a moving source.
PP3 battery and rotation cord supplied.

Product code: LA50-360

90mm dia.