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INCANDESCENT LAMPS
Incandescent lamps produce visible light by heating a tungsten filament to extremely high temperatures. The filament is surrounded by a sealed glass jacket which is filled with gases at low pressure. An incandescent lamp produces a colour temperature of 2700 degrees Kelvin at 120 volt.
Incandescent lamp shapes:
Incandescent lamps come in many different shapes to suit different applications.
All incandescent lamps are designated by a letter or letters followed by a number. The letter identifies the lamps shape while the number indicates the diameter of the lamp in eighths of an inch.
For example, a BR-30 lamp has a Bulged Reflector with a diameter of 3 3/4" (30 divided by 8 = 3 3/4).
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