General Information

Serial #

N/A

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

GLASS, CERAMIC, METAL

Dimensions

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

Length

28.0 cm

Width

11.5 cm

Height

11.5 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

Unknown

Country

Unknown

State/Province

Unknown

City

Unknown

Context

Country

Unknown

State/Province

Unknown

Period

Unknown

Canada

SODIUM STREET LIGHTING 1ST TRIED IN CANADA IN 1934/ IN 1938-9 THE QUEEN ELIZABETH WAY WAS LIGHTED WITH SODIUM-VAPOUR LAMPS TO MARK THE INTERSECTIONS/ AT THE TIME, IT WAS THE MOST ILLUMINATED HIGHWAY IN THE WORLD

Function

LIGHTING/ GENERAL/ CLEAR/ SODIUM LAMPS WERE USED OUTDOORS FOR STREET LIGHTING, FLOODLIGHTING & AREA LIGHTING & INDOORS FOR HIGH-BAY INDUSTRIAL INSTALLATIONS

Technical

THIS LAMP, INTRO. TO MARKET IN 1965, SAID TO BE THE MOST EFFICIENT LIGHT SOURCE ADVANCE SINCE INTRO. OF FLUORESCENT LAMP 1939/ CERAMIC ARC TUBE ALLOWED USE OF ALKALI METAL VAPOURS AT MUCH HIGHER TEMPS THAN PRACTICAL BEFORE/ PREVIOUS TUBES WOULD HAVE BLACKENED IN SECONDS AT VAPOUR TEMP HIGH ENOUGH FOR GOOD COLOUR LIGHT.

Area Notes

Unknown

Details

Markings

ON INNER TUBE '6842'/ IN BASE '1234567890 JFMAMJJASOND'/ HANDWRITTEN '1053' & '137V.'

Missing

N/A

Finish

CLEAR BULB, SILVERED SECTIONS ON 2 SIDES NEAR BASE, WHITE & GREY INNER TUBE, SILVER COLOUR INNER PTS/ BRASSTONE BASE, BLACK ON BOTTOM

Decoration

N/A