Lamp bulb, discharge

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OBJECT TYPE: FLUORESCENT/TUBE/BIPIN/40W
DATE: 1959
ARTIFACT NUMBER: 1992.2342.001

MANUFACTURER: Duro-Test
MODEL: POWER TWIST COOL WHITE DELUXE RAPID START HTC
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 & METAL CONSTRUCTION.

Dimensions

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

Length: 122.0 cm
Width: 3.5 cm
Height: 3.5 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: Duro Test
Country: United States of America
State/Province: Unknown
City: Unknown

Context

Country: North America
State/Province: Unknown
Period: THIS TYPE OF LAMP BULB USED 1960S+
Canada: Unknown
Function: TO PROVIDE ARTIFICAL ILLUMINATION, INDOORS.
Technical: POWER TWIST BULB DESIGNED WITH DOUBLE-GROOVE CONFIGURATION TO PROVIDE MORE LIGHT THAN STANDARD LAMPS. UNLIKE CONVENTIONALLY SHAPED FLUORESCENT BULBS IN WHICH THE ARC STREAM TRAVELS A STRAIGHT PATH, THIS TUBE SPIRALED THE ARC STREAM AND FORCED ITS ELECTRONS CLOSER TO THE PHOSPHOR-COATED TUBE WALL, RESULTING IN A LONGER ARC STREAM, AND MORE EFFICIENT PHOSPHOR EXCITATION. (REF. 1)
Area Notes: Unknown

Details

Markings: "POWER-TWIST/ [Registered trade mark symbol]/ COOL WHITE/ DURO-TEST/ MADE IN U.S.A./ ["L" within circle symbol]/ 40 W --4---/ DLX. RAPID ST. HTC" stamped in black at one end of glass sleeve.
Missing: TUBE IS DAMAGED AT ONE END OF GLASS SLEEVE: SMALL AREA OF SLEEVE IS MISSING. [NB: CONTRARY TO WORKSHEET REPORT, BIPINS ARE NOT DAMAGED]
Finish: WHITE GLASS SLEEVE; SILVER METAL ENDS.
Decoration: N/A

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Duro-Test, Lamp bulb, discharge, circa 1959, Artifact no. 1992.2342, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1992.2342.001/

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