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A tuning fork is an acoustic resonator in the form of a two-pronged fork with the prongs formed from a U-shaped bar of elastic metal (usually steel). It resonates at a specific constant pitch when set vibrating by striking it against a surface or with an object, and emits a pure musical tone once the high overtones fade out.
Over time, tuning forks were adapted for use in medical and therapeutic settings, where their precise frequencies have been harnessed for healing and therapeutic purposes. [3] Tuning forks are known for their nearly pure frequency response, emitting a clear, unwavering tone that is free from the complex overtones found in other instruments.
Bellfounding is the casting and tuning of large bronze bells in a foundry for use such as in churches, clock towers and public buildings, either to signify the time or an event, or as a musical carillon or chime. Large bells are made by casting bell metal in moulds designed for their intended musical pitches.
Sympathetic resonance is sometimes an unwanted effect that must be mitigated when designing an instrument. For example, to dampen resonance in the headstock, some electric guitars use string trees near their tuning pegs. Similarly, the string length behind the bridge must be made as short as possible to dampen resonance.
The company's origins as a musical instrument manufacturer are still reflected today in the group's logo—a trio of interlocking tuning forks. [ 7 ] [ 5 ] After World War II , company president Genichi Kawakami repurposed the remains of the company's war-time production machinery and the company's expertise in metallurgical technologies to the ...
The tuning fork was powered by a one-transistor electronic oscillator circuit, so the Accutron qualifies as the second "electronic watch", following the Hamilton Electric released in 1957. [32] Instead of the ticking sound made by mechanical watches, the Accutron had a faint, high-pitched hum that came from the vibrating tuning fork.