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, ...
WHILE the possibility of vibrating a thin cord regularly in a flat plane from a tuning fork has long been known as the Meldé cord, from its discoverer ; and the development of large cigar-shaped loops ...
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