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Resonator facts for kids

Kids Encyclopedia Facts
Two dim standing wave
A standing wave in a rectangular cavity resonator

A resonator is something that resonates. This may make a particular frequency of a sound or other vibration become bigger.


In electromagnetics a cavity resonator is a resonator composed of a space that is usually surrounded by a dielectric or metal which allows standing wave patterns at particular frequencies, eigenmodes, correlated to their size, shape, and material.


Most musical instruments have resonators. They are the parts which makes the sound louder. A vibraphone, for example, has long tubes underneath the keys. It also has a special effect: a mechanism which, when it is turned on, opens and shuts the resonators very quickly so that a trembling sound is heard.

The body of a violin is a resonator: without the body the sound of the string vibrating would hardly be heard, just as the sound of an elastic band stretched between two fingers can hardly be heard.

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Kids robot.svg In Spanish: Resonador para niños

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