Tunay na ELECTRICIAN lang nakakaalam nito, A fluorescent light is a gas-discharge lamp that produces light by passing an electric current through mercury vapor, which generates ultraviolet (UV) light that excites a phosphor coating inside the tube. This phosphor then glows and emits visible light. Fluorescent lights are more energy-efficient than incandescent bulbs and are often found in tubular or compact shapes used for commercial and domestic lighting. How it works An electric current passes