Tuning forks are used for observing sound waves and resonance. They provide an almost-pure harmonic frequency that can be used as a reference to check an oscilloscope as well as demonstrate wave physics.
Here is a list of sellers on eBay and Amazon offering low-cost tuning forks that are suitable for scientific experiments with children.
|Ebay has returned a malformed xml response. This could be due to testing or a bug in the RSS2 Generator. Please check the support forums to see if there are any posts regarding recent RSS2 Generator bugs.
No items matching the keyword phrase "tuning fork" were found. This could be due to the keyword phrase used, or could mean your server is unable to communicate with Ebays RSS2 Server.
CURL error code = 6. (Couldn't resolve host 'rest.ebay.com')