Please note that the content of this book primarily consists of articles
available from Wikipedia or other free sources online. Ogden Nicholas
Rood (1831-1902) was an American physicist best known for his work in
color theory. He studied in Berlin and Munich before his appointment as
Chair of Physics at Columbia University, a position he held from 1863
until his death. His book on color theory, Modern Chromatics, with
Applications to Art and Industry, was published in 1879, with German and
French translations appearing in 1880 and 1881, respectively. Rood
divided color into three constants: purity, luminosity, and
hue-equivalent to James Clerk Maxwell's tint, shade, and hue (Harrison,
640).