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"A"  Bulbs are the most common general purpose incandescent light bulbs in use today. The "A" designates that the shape of the bulb is ARBITRARY, the number following the "A" denotes the width of the glass envelope in eighths of an inch. A-23 bulbs are twenty three (23) eighths of an inch in diameter or 2.875" inches or 73.025 millimeters. The incandescent light bulb or incandescent lamp makes light by passing electric current through a wire filament in a glass envelope filled with an inert gas. The filament resists the electrical current and produces a glow (incandesces). One of the by-products of this production of light is heat. Incandescence is the emission of light (visible electromagnetic radiation) from a hot body due to its temperature. The term derives from the verb incandesce, to glow white.
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150A23/IF/130V/5M 150 Watt A23 Inside Frost E26 Base - 150 Watt A23 Inside Frost Medium Base 130 Volt, 5,000 Hour 150A23/IF/Safetycoated/130V Safety Coated A23 E26 Base - 150 Watt Safety Coated A23 Silicone Coated Inside Frost Medium Base 130 Volt 40A23/E26/1893 120V 40 Watt 1893 Carbon Filament A23 - 40 Watt Clear A23 1893 Style Carbon Filament Light Bulb Medium Base 120 Volt
40A23/E26/1890 120V 40 WATT 1890 CARBON FILAMENT A23 BULB E26 BASE, CARBON FILAMENT BULBS, CARBON FILAMENT LAMPS, 1890 STYLE LIGHT BULBS, ANTIQUE STYLE LIGHT BULB, THOMAS EDISON REPLICA LIGHT BULB, THOMAS EDISON BULB, 1890 STYLE BULB
40A23/E26/1890 120V 40 WATT 1890 CARBON FILAMENT A23 BULB E26 BASE - 40 Watt Clear A23 1890 Thomas Edison Replica Style Carbon Filament Light Bulb Medium Base 120 Volt
   
 
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