A 128Hz medical tuning fork appeared in my collection thanks to a friend! Have you ever used a tuning fork? According to Wikipedia, the tuning fork was invented in 1711 by British musician John Shore, ...

She taught us to declutter our homes. Now, Kondo’s $75 ‘tuning fork and quartz crystal’ set is making people ask: what the blazes, Marie? Over the last year, Marie Kondo’s Netflix series – Tidying up ...

THE tuning-fork when its number of double vibrations, to and from in a second, or briefly its frequency, has been ascertained, is a most convenient instrument for measuring minute divisions of time.

Steel tuning fork, with a stylus extending from one tine. A black, metal electromagnet is set between the tines. There is a red paper tag strung to the fork. An inscription reads "CH STOELTING CO. / ...