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Description: | E. ZIMMERMANN LEIPZIG (punched into the base of the cylinder). (musical anotations on a small silvered placque f1 equals d2) MANU E. Zimmermann. circa 1907 Emilienstrasse 21, Leipzig, Germany ISSU Andrew H. Baird. 1908 39, Lothian Street, Edinburgh, Scotland. DES after HELMHOLTZ,Hermann,Ludwig,Ferdinand,Professor,von. circa 1856 Bonn, Germany. This is one of a set of four cylindrical Helmholtz resonators. which were fitted into the ear with a hot sealing wax seal. A sound of unknown frequency was placed at the open end of the cylinder and when the appropriate cylinder was chosen there occurred a resonance and re-inforrcement of the sound. This cylinder's major resonance frequency is equal to the second harmonic of d but it will respond to a lesser extent to all the harmonics of d. The cylinder is decorated with a hand tooled water pattern | License: | http://www.hmag.gla.ac.uk/spirit/rights/ | Publisher: | Hunterian Museum and Art Gallery, University of Glasgow | Rights holder: | Hunterian Museum and Art Gallery, University of Glasgow | Subjects: | SCIENTIFIC COLLECTION : | Source: | Hunterian Museum | Creator: | Hunterian Museum and Art Gallery, University of Glasgow | Identifier: | http://www.huntsearch.gla.ac.uk/cgi-bin/... | Language: | en-GB | Go to resource |
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