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, ...
It starts with an A. An A-440, to be exact. Ken Serviss slaps a metal tuning fork against his leg, letting it reverberate softly. He places the tool against the body of a grand piano, amplifying the ...
[Willem Koopman aka Secretbatcave] was looking at a master clock he has in his collection which was quite a noisy device, but wanted to use the matching solenoid slave clock mechanism he had to hand.
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