Resonators

electronic oscillator circuit

A resonator is a device or system that exhibits resonance or resonant behavior. That is, it naturally oscillates with greater amplitude at some frequencies, called resonant frequencies, than at other frequencies. The oscillations in a resonator can be either electromagnetic or mechanical (including acoustic). Resonators are used to either generate waves of specific frequencies or to select specific frequencies from a signal. Musical instruments use acoustic resonators that produce sound waves of specific tones. Another example is quartz crystals used in electronic devices such as radio transmi

piezoelectric ceramic element that has a narrow response to a particular frequency

type of optical resonator

human-made device whose collective motion follows the laws of quantum mechanics

a resonator