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Isaac Newton - Demonstrated that light is the source of color. He used a prism to split sunlight into its constituent colours and another to recombine them to make white light.
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Thomas Young - Suggested that the retina at the back of the eye contains three types of colour sensitive receptor, one sensitive to blue light, one to green and one to red. The brain interprets various combinations of these colours to form any other colour in the visible spectrum.
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Fox Talbot - Experiments using Silver chloride coated paper to yield "negatives" of silhouettes.
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Sir John Herschel Suggests fixing Talbot's images in sodium thiosulphate and coined the terms "photography", "negative" and "positive".
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Mathew B. Brady (American, 1823–1896)
Albumen silver print from glass negative -
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William Merritt Chase (American, 1849–1916) Oil on canvas
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Augusta and Louis Lumiere Patented "Autochrome" the first additive color screen film material.
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