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1941 - glass tubes are filled to the top with liquid phosphors

GIVING A TUBE ITS PHOSPHOR LINING

CD 1963083 E&MP 25.020

Electric Lamps

July 1941

Fluorescent tubes light by means of an interior coating of fluorescent powders called phosphers. The glass tubes are filled to the top with the liquid phosphors.

A young lady at work in the Westinghouse Lamp Division, Bloomfield, N.J., here fills a tube. The phosphors drain out, leaving a coating inside.






Original Caption by Science Service
Westinghouse



National Museum of American History

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