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Position and Size of LightsourceControl of Brightness
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15 amperes 60-watt lamps absorb amber amount of light appliance branch circuits artificial lighting bathroom blue brightness candle ceiling fixtures ceiling outlet cent colored light comfort conductors convenience outlets dark daylight devices Diffuse Reflection direct light efficiency electromotive force eyes factor feet filament floor and table foot-candle fuses garage glass globe gray green harsh illumination incandescent lamp inches indirect installed kilowatt-hours kitchen lamp bulbs light output light source light striking lighting effect lighting equipment living room lumen luminous luminous flux luminous intensity Medium Inside frosted ment meter National Electrical Code object obtained operated orange panel box placed pointer portable lamps produce rated reddish purple reflected semi-indirect series circuit shade shadows spectral colors square sunlight systems of lighting table lamps temperature tion ultraviolet radiation unit unit expressing usually utilizing visible spectrum vision voltage volts wattage watts wave lengths white light yellow