Related by context. Frequent words. (Click for all words.) 47 glowy 46 dimmer switches 46 glows 46 brightness 45 photometer 44 fluoresce 43 photometry 43 bug zapper 43 cd m 43 phosphorescence 43 candlepower 43 faint glow 43 fluorescent lamp 43 glow 43 florescent light 43 luminous flux 43 iridescence 42 luminosity 42 watt light bulb 42 planet orbits 42 LEDs 42 reddish hue 42 downlight 41 LCD backlight 41 sensor detects 41 RGB LED 41 LED lamp 41 blindingly bright 41 shorter wavelengths 41 photosynthesize 41 florescent 41 fluorescent light 40 photometric 40 phosphors 40 fluorescent 40 aurorae 40 elemental composition 40 backlights 40 cd/m2 brightness 40 fluorescent bulb 40 bioluminescent 39 fireflies 39 Gamma ray bursts 39 luminance 39 luminescence 39 LEDs light emitting 39 LEDS 39 backlit display 39 light emitting diodes LEDs 39 lm W 39 millivolts 39 firefly 39 fluorescing 39 greenish yellow 39 flashes 39 magnifying lens 38 unaided eye 38 watt bulb 38 bulb 38 pink hue 38 ultraviolet UV light 38 emissivity 38 laser pulse 38 fluoresces 38 ultraviolet light 38 light 38 shine brighter 38 LED illumination 38 speckles 38 flourescent 38 electroluminescent 37 flashbulb 37 ambient light 37 ionize 37 mason jars 37 backlight 37 LED bulbs 37 lights 37 fluorescence 37 #cd/m# 37 rustling leaves 37 scintillation 37 LED 37 CCFLs 37 backlighting 37 infrared beam 37 dimness 37 luminous 37 radiance 37 microwave radiation 37 metal halide 37 watt LED 37 reddish color 37 lumens 37 automatically adjusts 37 motion detector 37 dim 36 cd/m2 36 Fluorescent 36 flickers 36 backlit LCD