Biprisme

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Ingenium, 1998.0267.001
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OBJECT TYPE: DEMONSTRATION/FRESNEL
DATE: 1870–1880
ARTIFACT NUMBER: 1998.0267.001

MANUFACTURER: Laurent, Leon
MODEL: Unknown
LOCATION: Paris, France

More Information

General Information

Serial #: N/A
Part Number: 1
Total Parts: 1
AKA: N/A
Patents: N/A
General Description: CAST METAL BASE; METAL STAND, SWIVEL BRACKET AND SUPPORTS FOR PRISMS; GLASS PRISMS

Dimensions

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

Length: 21.0 cm
Width: 21.0 cm
Height: 45.5 cm
Thickness: N/A
Weight: N/A
Diameter: N/A
Volume: N/A

Lexicon

Group: Physics
Category: Light & electromagnetic radiation
Sub-Category: N/A

Manufacturer

AKA: Laurent
Country: France
State/Province: Unknown
City: Paris

Context

Country: Canada
State/Province: Ontario
Period: This instrument used circa 1870S-1880S +
Canada: Part of a collection of physics laboratory and classroom demonstration apparatus from 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: Used to demonstrate and observe interference formed by two refracted images.
Technical: Example of shallow prisms used in fresnel biprism arrangement. These adjacent prisms provide two interfering beams or a double light source, from a slit source of light. Fresnel mirrors and prisms became key demonstration pieces for students in the 19th c. (ref. 2)
Area Notes: Unknown

Details

Markings: none visible.
Missing: APPEARS COMPLETE. From CA of 12/03/2001 by Matthew Bruce: No - appears complete
Finish: STAND FEET, SWIVEL BRACKET AND HOUSING FOR LARGER PRISM ALL HAVE DARK FINISH. BRIGHT LACQUERED FINISH ON STAND COLUMN, HOUSING FOR SMALL PRISM, AND ARC-SHAPED SUPPORT FOR LARGE PRISM.
Decoration: N/A

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If you choose to share our information about this collection object, please cite:

Laurent, Leon, Biprisme, circa 1870–1880, Artifact no. 1998.0267, Ingenium – Canada’s Museums of Science and Innovation, http://collections.ingeniumcanada.org/en/id/1998.0267.001/

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