Author_Institution :
Research Laboratory, General Electric Company, Schenectady, N.Y.
Abstract :
Fluorescent Industrial Lamp. Out of the laboratory has come a new, highly efficient 100-watt lamp for industrial lighting. Like the well-known long-tube Cooper-Hewitt lamp, the new lamp is a four-foot tube containing a low-pressure mercury-vapor arc; but the new feature is a fluorescent coating on the inside wall of the tube, which converts the ultraviolet radiations of the arc into light. The efficiency is 50 lumens per watt, about three times that of the corresponding incandescent lamp.
