Diaphragm

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Ingenium, 1998.0264.001
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OBJECT TYPE: N/A
DATE: 1880–1920
ARTIFACT NUMBER: 1998.0264.001

MANUFACTURER: Unknown
MODEL: 18
LOCATION: Unknown

More Information

General Information

Serial #: N/A
Part Number: 1
Total Parts: 1
AKA: N/A
Patents: N/A
General Description: SHEET METAL CONE FITTED TO CAST METAL COLLAR; REMNANT OF RUBBER TUBING REMAINS ON ONE PORT; PAPER (?) MEMBRANE

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length: 9.5 cm
Width: 7.0 cm
Height: 21.0 cm
Thickness: N/A
Weight: N/A
Diameter: N/A
Volume: N/A

Lexicon

Group: Physics
Category: Acoustics
Sub-Category: N/A

Manufacturer

AKA: Unknown
Country: Unknown
State/Province: Unknown
City: Unknown

Context

Country: Canada
State/Province: Ontario
Period: THIS INSTRUMENT PROBABLY USED C. 1890S +
Canada: PART OF A COLLECTION OF PHYSICS LABORATORY AND CLASSROOM DEMONSTRATION APPARATUS FOM MCMASTER UNIVERSITY. FOUNDED IN 1887 MCMASTER WAS ORIGINALLY A BAPTIST INSTITUTION, AND WAS LOCATED IN TORONTO. IN 1930 THE UNIVERSITY AND ITS STUDENT POPULATION OF 500 WAS MOVED TO HAMILTON, ONT. (REF. 1)
Function: TO CONDUCT AND AMPLIFY SOUND.
Technical: EXAMPLE OF SMALL DIAPHRAGM OF VARIETY USED TO INTRODUCE OR AMPLIFY SOUND FOR DEMONSTRATION OR EXPERIMENTAL PURPOSES.
Area Notes: Unknown

Details

Markings: " 18 " incised on base component, near screw attachment point.
Missing: UNKNOWN- DIAPHRAGM APPEARS COMPLETE. From CA of 12/13/2001 by David Daley: No - Complete
Finish: SMOOTH, REFLECTIVE BLACK PAINTED FINISH APPLIED TO CONE; BRIGHT LACQUERED COLLAR; NATURAL BRASS-COLOUR PORT & ADJUSTMENT SCREW. CAST CHAMBER BEHIND COLLAR HAS DULL BLACK WRINKLE-TEXTURED FINISH.
Decoration: N/A

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Unknown Manufacturer, Diaphragm, circa 1880–1920, Artifact no. 1998.0264, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1998.0264.001/

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