Diaphragm

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Ingenium, 1988.0685.023
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OBJECT TYPE: microscope/dark field/central
DATE: 1900
ARTIFACT NUMBER: 1988.0685.023

MANUFACTURER: Seibert
MODEL: Unknown
LOCATION: Wetzlar, Federal Republic of Germany

More Information

General Information

Serial #: N/A
Part Number: 23
Total Parts: 32
AKA: Disk stop
Patents: N/A
General Description: BRASS[?]

Dimensions

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

Length: 2.0 cm
Width: 2.0 cm
Height: N/A
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: Seibert
Country: Federal Republic of Germany
State/Province: Unknown
City: Wetzlar

Context

Country: Canada
State/Province: Unknown
Period: POSSIBLY EARLY 1900'S. SEIBERT BRO'S SET UP CO. IN 1873 IN WETZLAR, GERMANY. (REF.1)
Canada: USED IN CANADIAN GEOLOGICAL SURVEY POSSIBLY DURING EARLY 1900'S BY DONORS HUSBAND. HE WAS A PHOTOGRAPHER & DEPARTMENT HEAD WITH GEOLOGICAL SURVEY.
Function: Diaphragm used to block and help focus light in specific ways to illuminate the specimen, producing a different effect than that achieved without their use.
Technical: AN IMPORTANT TOOL IN THE FIELD OF PETROGRAPHY. THE NICOL PRISM ANALYSER WAS USED TO STUDY THE OPTICAL PROPERTIES OF MINERALS IN ROCK. THIS HELPS TO DETERMINE THE COMPOSITION OF THE ROCK.
Area Notes: Unknown

Details

Markings: N/A
Missing: From CA of 12/05/2001 by David Daley: Undetermined - unknown
Finish: MAY BE BRASS PAINTED BLACK
Decoration: N/A

CITE THIS OBJECT

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

Seibert, Diaphragm, circa 1900, Artifact no. 1988.0685, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1988.0685.023/

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