Related by context. Frequent words. (Click for all words.) 53 fluorescent lamp 52 fluorescent tube 51 halogen lamp 51 halogen lamps 51 fluorescent lamps 50 bulb 49 metal halide 49 halogen lights 49 fluorescent bulb 49 phototherapy 48 fluorescent light 48 lamps 48 electronic ballasts 48 LED lamp 47 LED lamps 47 cold cathode fluorescent 47 lamp 47 mercury vapor 46 lumen output 46 fluorescent 46 unshielded 45 UV light 45 light emitting diodes LEDs 45 diodes 45 compact fluorescent lamps 45 fluorescent fixtures 45 CFL bulb 45 LED lights 45 fluorescents 45 sockets 45 halogen bulbs 45 fluorescent tubes 45 watt light bulb 44 halogens 44 ampere 44 filament 44 photosensitive 44 LED bulb 44 incandescent lamps 44 downlights 44 ultra violet light 43 inverter 43 LEDs 43 LED illumination 43 watt incandescent bulb 43 1kW 43 watt bulb 43 photoelectric 43 High Intensity Discharge 42 ultra violet rays 42 backlights 42 airconditioners 42 infrared rays 42 multimeter 42 bulbs 42 light bulb 42 #.#W [003] 42 mW 42 kerosene lamp 42 brightness 42 ionizing 41 florescent 41 lm W 41 fluorescent lighting 41 Light Emitting Diode LED 41 CFLs 41 fluorescent lights 41 spray nozzle 41 joules 41 absorbance 41 ACs 41 ultra violet 41 rectifier 41 volts 41 dimmable 41 illumination 41 LED 41 infrared beam 41 Floodlights 41 transformers 41 light emitting diode 41 backlight 41 #KW [001] 41 dimmers 41 compact fluorescent 40 amperes 40 electric toothbrushes 40 #mW [002] 40 phosphors 40 CFL bulbs 40 alkaline battery 40 typ 40 dimmer switches 40 halogen 40 capacitors 40 microwave oven 40 incandescent bulb 40 pulse generator 40 infra red 40 Havells 40 ultraviolet UV