Two identical tuning forks mounted on resonance boxes are struck with rubber mallets to show they have identical tones. A small piece of putty is added to one tuning fork to alter it's frequency. When ...

See: EIGENTON, HELMHOLTZ RESONATOR, RESONANCE, RESONATOR. Compare ... A common illustration of sympathetic vibration is to sound a tuning fork and bring it close to, but not touching, another fork of ...