Helmholtz resonator
(also Helmholtz' resonator, Helmholtz's resonator) Physics
noun
A hollow object designed to have a strong resonance at a particular pitch and no other significant resonances.
- As invented by Helmholtz it consisted of a hollow sphere with a short narrow neck. The resonant frequency depends on the volume of the sphere and the length and area of the neck..
Origin
Mid 19th century. Described by Helmholtz in 1859 in Gelehrte Anzeigen der Königl. Bayerischen Akad. der Wissensch. 48 553.
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