GIVING A TUBE ITS PHOSPHOR LINING
CD 1963083 E&MP 25.020
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.