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Infrared light was discovered in 1800
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Humphry Davy
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In 1802, Humphry Davy invented the first electric light.
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it took 1,000 tries for the light bulb to successfully work
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In 1878, Swan developed a longer lasting light bulb using a treated cotton thread that also removed the problem of early bulb blackening.
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thomas edison invents the light bulb
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, he filed for a U.S. patent for an electric lamp using “a carbon filament or strip coiled and connected … to platina contact wires”. The filament was made from a piece of carbonized thread