Doppler Effect Demonstration Apparatus, 92dB buzzer, 0.8m tether
$25.99$29.99
Description
The buzzer is 92 dB while standing still, when spun a student can easily hear the shift in frequency.Buzzer housing has a simple on/off switch and is constructed of rugged ABS plastic.Nylon cord is 2'8" attached to a rugged ABS handle 8.5in long, 1in diameter).Battery not included
