Photometer

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Ingenium, 1992.2415.001
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OBJECT TYPE: LIGHT BOX
DATE: Unknown
ARTIFACT NUMBER: 1992.2415.001

MANUFACTURER: Leeds & Northrup Co.
MODEL: Unknown
LOCATION: Philadelphia, Pennsylvania, United States of America

More Information

General Information

Serial #: N/A
Part Number: 1
Total Parts: 1
AKA: N/A
Patents: N/A
General Description: METAL CASING & PARTS/ GLASS OPTICS/ CERAMIC PART

Dimensions

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

Length: 22.0 cm
Width: 14.0 cm
Height: 26.2 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: Leeds Northrup
Country: United States of America
State/Province: Pennsylvania
City: Philadelphia

Context

Country: Unknown
State/Province: Unknown
Period: Unknown
Canada: PART OF LARGE & VARIED COLLECTION OF OVER 7500 ELECTRICAL ITEMS ACQUIRED & DOCUMENTED BY RO IN 1960S. COLLECTION WAS THOUGHT TO BE LARGEST & MOST COMPREHENSIVE IN CANADA & WAS DONATED TO NMST IN 1992.
Function: INSTRUMENT USED TO MEASURE UNKNOWN LIGHT SOURCE BY DIRECT COMPARISON WITH LIGHT SOURCE OF KNOWN QUANTITY.
Technical: EXAMPLE OF LUMMER BRODHUM PHOTOMETER SIGHT BOX. LUMMER BRODHUM PHOTOMETER CUBE WAS DEVELOPED BY GERMAN PHYSICIST OTTO LUMMER (1860-1925) & EUGEN BRODHYN.
Area Notes: Unknown

Details

Markings: RAISED LETTERING ON UNDERSIDE READS "THE LEEDS & NORTHRUP CO./ PHILADELPHIA."
Missing: CASING TOP
Finish: EXTERIOR PAINTED BLACK/ COLOURLESS TRANSPARENT GLASS/ BLACK & METALLICPARTS
Decoration: N/A

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

Leeds & Northrup Co., Photometer, Unknown Date, Artifact no. 1992.2415, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1992.2415.001/

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