Ostwald, Wilhelm color system

Another great modern theorist was Wilhelm Ostwald (1853-1932) of Germany, a Nobel Prize winner in chemistry. Ostwald developed the process for converting ammonia and oxygen to nitric acid. His color system, devised about 1915, had four primaries—red, yellow, sea-green, and blue—and four... 

Wilhelm Ostwald not only devised a color system, as described above, but also developed a process for making nitric acid. About 15.4 billion lbs. (7 billion kg) of nitric acid are produced in the United States each year. 

Ostwald color system n. System of classifying and designating colors in terms of their full color content, their white content, and then-black content. The system was devised by Wilhelm Ostwald, based on additive color mixture, by means of spinning a Maxwell Disc and was used as the basic principle in making the color harmony manual. 

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