WGas-discharge lamp
WArc lamp
WCeramic discharge metal-halide lamp
WCold cathode
WCompact fluorescent lamp
WCrackle tube
WCrookes tube
WDeuterium arc lamp
WElectrical ballast
WElectrodeless lamp
WFlashtube
WFluorescent lamp
WFluorescent lamps and health
WFluorescent-lamp formats
WGeissler tube
WGermicidal lamp
WGlow discharge
WGlow switch starter
WHigh-intensity discharge lamp
WHollow-cathode lamp
WHot cathode
WHydrargyrum medium-arc iodide lamp
WList of sulfur lamp installations
WLuminous discharge tubes
WMercury-vapor lamp
WMetal-halide lamp
WPlasma globe
WSodium-vapor lamp
WStrobe beacon
WStrobe light
WSulfur lamp
WTanning lamp
WTeltron tube
WXenon arc lamp
WYablochkov candle