Where Can I Find a Quiet Motor for a Doppler Shift Experiment?

AI Thread Summary
A user is seeking a quiet motor and rotating table for a Doppler shift experiment, referencing a specific lab manual for guidance. They found a suitable option from PASCO but noted that the motor is too noisy for accurate measurements. The discussion includes a suggestion to explore yard sales or pawn shops for old phonographs, which have quieter motors and could serve as effective microphone mounts. Participants are encouraged to share additional resources or alternatives for quieter motors. The conversation highlights the importance of minimizing noise in experiments involving the Doppler effect.
Ruddiger27
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Hey, not sure if this should go here or not but it seemed the best place.
I'm trying to find a rotating table and a motor for a doppler shift experiment a lot like the one on page 4 of this website:

http://academic.reed.edu/physics/courses/phys100/Lab%20Manuals/Doppler%20Effect/Doppler.pdf

I found one on PASCO that seemed perfect, the only problem is that the motor makes too much noise to hear the doppler shift properly. Does anybody know of any other website that supplies turntables and motors? Or maybe somewhere that sells more efficient motors that wouldn't be too noisy?
Thanks for any advice in advance.
 
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Have you thought of just hitting a few yard sales or pawn shops to find an old phonograph? Their motors are very quite, they're shock-mounted on springs, and the tone arm would make a fine microphone mount. :approve:
 

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