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

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SUMMARY

The discussion focuses on sourcing a quiet motor for a Doppler shift experiment, specifically referencing a rotating table and motor similar to those used in academic physics labs. The user initially found a suitable motor from PASCO but encountered issues with excessive noise, hindering the experiment's effectiveness. Suggestions include exploring yard sales or pawn shops for old phonographs, which feature quieter motors that are shock-mounted and suitable for the intended application.

PREREQUISITES
  • Understanding of Doppler shift principles
  • Familiarity with experimental physics setups
  • Knowledge of motor types and their noise levels
  • Experience with sourcing laboratory equipment
NEXT STEPS
  • Research quiet motor options for laboratory experiments
  • Explore the specifications of PASCO motors for alternatives
  • Investigate the use of phonograph motors in scientific applications
  • Learn about shock-mounting techniques for reducing vibration and noise
USEFUL FOR

Physics educators, experimental physicists, hobbyists conducting Doppler shift experiments, and anyone interested in sourcing quiet motors for sensitive applications.

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: