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

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

late 1930s +

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

This type of lamp used an improved blue fluorescent material, made by heating together calcium oxide or a calcium compound, such as calcium carbonate, which decomposes producing blue light at a lower temperature than was the case with the previously used tungstic oxide.

Area Notes

Unknown

Details

Markings

Gold lettering on glass reads 'GENERAL GE (logo) ELECTRIC/ 30 WATT BL LIGHT'

Missing

Appears complete

Finish

White tube/ metallic and black end caps

Decoration

N/A