10/13/2023 0 Comments Waves mercury bundle rar air![]() The typical luminous efficacy of fluorescent lighting systems is 50–100 lumens per watt, several times the efficacy of incandescent bulbs with comparable light output. A fluorescent lamp converts electrical energy into useful light much more efficiently than an incandescent lamp. An electric current in the gas excites mercury vapor, which produces short-wave ultraviolet light that then causes a phosphor coating on the inside of the lamp to glow. Ī fluorescent lamp, or fluorescent tube, is a low-pressure mercury-vapor gas-discharge lamp that uses fluorescence to produce visible light. In this lamp, the filament is surrounded by an oblong metal cathode shield, which helps reduce lamp end darkening. Inside the lamp end of a preheat bi-pin lamp.
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