|
Date: |
|
Description: | GRIFFIN & GEORGE LIMITED (makers trade name on the resonator and the carton) Hunterian Museum G.1986.128 (museum number typed on a self adhesive label attached to the storage carton, removed). DES after GALTON,Francis. 1876 Paris France MANU Griffin and George Limited. circa 1960 England. DES after GRAHAM,George. 1727 London, England. This variable pitch whistle was designed by Galton to discover the upper hearing threshold of animal species including humans. The whistle operates in the audible to the ultrasonic range. It was not designed as a silent dog whistle.
Air is pumped into the enclosed labial (reedless) pipe and the sound produced is amplified by the closed resonator tube. The pitch of the sound can be altered by increasing or decreasing the length of the resonartpr by means of the micrometer screw. The longer the tube the lower the note. | 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 |
|
More Like this...
-
Whistle
Hunterian Museum G.1986.128 (museum number…
-
-
-
-
-
-
-
-
-
|