File:Helmholtz resonator 2.jpg

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Helmholtz_resonator_2.jpg (665 × 504 pixels, file size: 190 KB, MIME type: image/jpeg)

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English: A Helmholtz resonator in an experimental tone generator designed by Hermann Helmholtz. The resonator is the cylindrical object (i). Most musical tones are composed of many frequencies, called harmonics. The purpose of this device was to generate a pure tone of one frequency. The electromagnet (b) vibrates the tuning fork (a). The Helmholtz resonator (i) is tuned to the fundamental frequency of the tuning fork, amplifying its sound.
For more information see Hermann L. F. Helmholtz (1912) On the Sensations of Tone as a Physiological Basis for the Theory of Music, 4th Ed., translated from his 1877 work by Alexander J. Ellis, Longmans Greene & Co., London, p.120-121
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Source Historisk Fysik bind I
Author Poul la Cour & Jacob Appel

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current12:39, 14 October 2007Thumbnail for version as of 12:39, 14 October 2007665 × 504 (190 KB)Saddhiyama (talk | contribs){{Information |Description=The Helmholtz Resonator |Source=Historisk Fysik bind I |Date=1896 |Author=Poul la Cour & Jacob Appel |Permission= |other_versions= }} Category:Acoustics Category:History of technology

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