Lamp bulb, discharge

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OBJECT TYPE: fluorescent/tube/double contact/high output
DATE: 1954
ARTIFACT NUMBER: 1992.2990.001

MANUFACTURER: Sylvania
MODEL: F72T12/CW/HO Cool White High Output
LOCATION: 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: 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: 177.5 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: Sylvania
Country: United States of America
State/Province: Unknown
City: Unknown

Context

Country: North America
State/Province: Unknown
Period: Circa 1954 +
Canada: An example of an American made lamp bulb of a type 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: High Output bulbs, developed in 1954, produced on-third more light than any previous lamp, without the higher wattage consumption. This type of lamp increased illumination levels in areas with limited numbers of lighting units or where lamps operated in lower temperatures. With the higher brightness, extra shielding and ventilation were required.
Area Notes: Unknown

Details

Markings: Black lettering on glass reads 'SYLVANIA/ F72T12/CW/HO/ COOL WHITE/ HIGH OUTPUT/ 72 U.S.A.'
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:

Sylvania, Lamp bulb, discharge, circa 1954, Artifact no. 1992.2990, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1992.2990.001/

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