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A tiny [[quartz]] tuning fork is used in [[crystal oscillator]]s, the most notable use of which are quartz [[digital watch]]es. The [[piezoelectricity|piezoelectric]] properties of quartz [[crystal]]s cause a quartz tuning fork to generate a pulsed electrical current as it resonates, which is used by the [[computer chip]] in the watch to keep track of the passage of [[time]]. In today's watches, they generally resonate at <math>2^{15}=32,768</math> [[Hertz|Hz]]. (See [[quartz clock]].)
Tuning forks, usually C-512, are used by medical practitioners to assess a patient's hearing. Lower-pitched ones (usually C-128) are also used to check vibration sense as part of the examination of the peripheral nervous system. They are also used therapeutically in [[sonopuncture]]. [[John Beaulieu]], a researcher on the therapeutic benefits of tuning forks, has recorded an album of music made entirely with tuning forks, called ''Calendula''. Other researchers into the therapeutic benefits of tuning forks are [[Arden Wilken]] and Jack Wilken.
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