[[TitleIndustry]]

How Electric lights work

Date:Jan 03, 2019

Electric lamps, which convert electrical energy into light energy to provide lighting equipment, appeared in the Second Industrial Revolution and worked on the following principles: The current through the filament (tungsten filament, melting point up to 3,000 ℃) to produce heat, spiral filament constantly aggregate heat, so that the filament temperature of more than 2000 ℃, filament in the incandescent state, like the red iron can glow and emit light. The higher the temperature of the filament, the brighter the light is emitted. So called incandescent lamps, from the point of view of energy conversion, when the electric light glows, a large amount of electrical energy will be converted into heat energy, only a very small part can be converted into useful light energy. The light emitted by the lamp is full color, but the proportion of the composition of the various colored light is determined by the luminescent substance (tungsten) and the temperature. Unbalanced proportions lead to a partial color of light, so the color of the object under the incandescent lamp is not real enough

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