except with a metal tuning fork? (some profanity, just to warn you!) Shock-mounted tuning force oscillator A crystal oscillator operates in a simple manner; you put some electrical energy in ...

It does require a little metalworking, as the tuning fork needed filing and threading ... A more common choice is a crystal, which usually has a much higher frequency. Sometimes the clock source ...

Scientists have discovered a new way to probe the interiors of neutron stars by using gravitational waves to turn them into "cosmic tuning forks." The reverberations of such ripples in spacetime ...