A strong output volume and variable pitch produce a dramatic study of the doppler shift associated with a moving source. This ball can be safely whirled around in a large horizontal arc while in the classroom to demonstrate the doppler effect.
Oakley STEM Center Lending Library
https://www.tntech.edu/stem
155 W 7th Sthttps://www.tntech.edu/stem
Cookeville, 38505
USA
(931) 372-6573