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Pagina 90 - Thus in the red space, there is more red than is necessary to make white light with the small portions of yellow and blue which exist there ; in the yellow space, there is more yellow than is necessary to make white light with...
Pagina 90 - ... at any point mixed with white light. In the red space there is more red than is necessary to make white light with the small portions of yellow and blue which exist there; in the yellow space there is more yellow than is necessary to make white light with the red and blue ; and in the part of the blue space which appears violet there is more red than yellow, and hence the excess of red forms a violet with the blue.
Pagina 90 - ... space in the solar spectrum, the primary yellow spectrum has its maximum in the middle of the yellow space, and the primary blue spectrum has its maximum between the blue and the indigo space. The two minima of each of the three primary spectra coincide at the two extremities of the solar spectrum. From this view of the constitution of the solar spectrum we may draw the following conclusions : — 1. Red, yellow, and blue light exist at every point of the solar spectrum. 2. As a certain portion...