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Looking at the ease with which we now capture colour pictures and transmit them around the world in seconds it's easy to forget that it was not that long ago news agencies were transmitting their wire photographs as colour separations, usually cyan, magenta and yellow - a process that relied on Clerk Maxwell's discovery.
BBC: Pioneering colour photography
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Once every possible length had been tried, the only way to impress the world was through colour: rainbow-hued Mohawks, stripes and wings.
ECONOMIST: Hair, beards and power
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Between them, they shook up the art world in the 17th Century with their subtle use of colour and penchant for striking religious paintings.
BBC: A second chance for Sevillian art