NRSC 320 Chapter Notes - Chapter 9: Receptive Field, Trichromacy, Subtractive Color
22 Mar 2018
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Reflectance curve: plots the percentage of light reflected from lettuce and tomatoes at each wavelength in the visible spectrum. Both vegetables reflect a range of wavelengths, but each selectively reflects more light in one part of the spectrum. Both paints still absorb the same wavelengths they absorbed when alone. So the only wavelengths reflected are those that are reflected by both paints in common. Subtractive color mixture: subtract all of the wavelengths except some that are associated with green. All of the light that is reflected from the surface by each light when alone is also reflected when the lights are superimposed. Additive color mixture: adding up the wavelengths of each light in the mixture. Colors of light are associated with wavelengths in the visible spectrum. The colors of objects are associated with which wavelengths are reflected (opaque objects) or transmitted (transparent objects)
