Incandescent Light
Incandescent light is given off when an object is heated until it glows. To emit white light, an object must be heated to at least 1,341°F (727°C). White-hot iron in a forge, red lava flowing down a volcano, and the red burners on an electric stove are all examples of incandescence. The most common example of incandescence is the white-hot filament in the light-bulb of an incandescent lamp.
History of incandescent lamps
In 1802, English chemist Humphry Davy (1778–1829) demonstrated that by running electricity through a thin strip of metal, that strip could be heated to temperatures high enough so they would give off light. The strip of metal, called a...
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