General Information

Serial #

N/A

Part Number

1

Total Parts

2

AKA

N/A

Patents

N/A

General Description

glass/ metal

Dimensions

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

Length

116.0 cm

Width

5.2 cm

Height

5.2 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Lighting Technology

Category

Lamp bulbs

Sub-Category

N/A

Manufacturer

AKA

General Electric

Country

United States of America

State/Province

Unknown

City

Unknown

Context

Country

North America

State/Province

Unknown

Period

circa 1960+

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 first GE 'Power Groove' lamp introduced in 1956; it had a groove along one side which placed phosphor closer to the centre of the arc stream and 'squeezed' the arc for greater light production. This second power groove uses grooves on opposite sides to produce same 'squeezing' effect & to make the arc travel in a wavy path to increase the arc length, giving greater efficiency and even higher light production. 'Power Groove' lamps were not interchangeable with other lamps - they required special ballasts and lamp holders.

Area Notes

Unknown

Details

Markings

Stamped on tube: 'GENERAL GE [LOGO] ELECTRIC/F48PG17-CW POWER GROOVE/ COOL WHITE U.S.A.'/ Hydro no. handpainted '1123'

Missing

N/A

Finish

Tube is white, silvertone & black ends

Decoration

N/A