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Douglas Leigh (May 24, 1907 – December 14, 1999) was an American advertising executive and lighting designer, and a pioneer in signage and outdoor advertising. [1] [2] He is famous for making New York City's Times Square the site of some of the world's most famous neon signs, [3] or electric billboards.
The next major technological innovation in neon lighting and signs was the development of fluorescent tube coatings. [22] Jacques Risler received a French patent in 1926 for these. [5] Neon signs that use an argon/mercury gas mixture emit a good deal of ultraviolet light. When this light is absorbed by a fluorescent coating, preferably inside ...
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Radioluminescent paint is a self-luminous paint that consists of a small amount of a radioactive isotope (radionuclide) mixed with a radioluminescent phosphor chemical. The radioisotope continually decays, emitting radiation particles which strike molecules of the phosphor, exciting them to emit visible light.
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