Lamp bulb, discharge

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OBJECT TYPE: fluorescent/tube/single pin
DATE: 1950
ARTIFACT NUMBER: 1992.3023.003

MANUFACTURER: Westinghouse
MODEL: 48T12 Cool White 38
LOCATION: Unknown

More Information

General Information

Serial #: N/A
Part Number: 3
Total Parts: 3
AKA: N/A
Patents: N/A
General Description: Glass tube coated with white phosphor/ metal parts/ synthetic parts

Dimensions

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

Length: 116.5 cm
Width: N/A
Height: N/A
Thickness: N/A
Weight: N/A
Diameter: 3.8 cm
Volume: N/A

Lexicon

Group: Lighting Technology
Category: Lamp bulbs
Sub-Category: N/A

Manufacturer

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

Context

Country: North America
State/Province: Unknown
Period: circa 1950+
Canada: An example of a lamp bulb used in Canada, part of a large and varied collection of over 7500 electrical items acquired and documented by Ontario Hydro in the 1960s. The collection was thought to be the largest and most comprehensive of its kind in Canada and was donated to the Canada Science and Technology Museum in 1992
Function: A device used to provide illumination by means of an electric current which excites mercury vapour in a glass tube, producing short-wave ultraviolet light that then creates fluorescence, producing visible light.
Technical: The Preheat model was an early type of fluorescent lamp. Cathodes had to be pre-heated to electron emitting temperature before the lamp would light. This lamp required the use of a separate starter which supplied several seconds of current flow through the cathodes to pre-heat them between the time the tube was turned on and the time the lamp emitted light.
Area Notes: Unknown

Details

Markings: Black lettering on glass reads 'WESTINGHOUSE/ 48T12 COOL WHITE 38'
Missing: Appears complete
Finish: White tube/ metallic and black end caps
Decoration: N/A

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

Westinghouse, Lamp bulb, discharge, circa 1950, Artifact no. 1992.3023, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/item/1992.3023.003/

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