Lamp bulb, discharge

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OBJECT TYPE
fluorescent/tube/bipin/preheat/hot cathode
DATE
1950
ARTIFACT NUMBER
1992.2998.001
MANUFACTURER
General Electric
MODEL
White
LOCATION
Unknown

More Information


General Information

Serial #
N/A
Part Number
1
Total Parts
2
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
90.5 cm
Width
N/A
Height
N/A
Thickness
N/A
Weight
N/A
Diameter
2.6 cm
Volume
N/A

Lexicon

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

Manufacturer

AKA
General Electric
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 'GENERAL GE (logo) ELECTRIC/ 30 WATT WHITE'
Missing
Appears complete
Finish
White tube/ metallic and black end caps
Decoration
N/A

CITE THIS OBJECT

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

General Electric, Lamp bulb, discharge, circa 1950, Artifact no. 1992.2998, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/item/1992.2998.001/

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