1. If the human eye was not responsive to differences in the amplitude of light waves, we would not be able to perceive differences in
A. saturation
B. purity
C. color
D. brightness
2. Television sets are able to recreate the entire visible spectrum by additively mixing three primary colors. This process is similar to the view of human color vision called
A. opponent-process theory
B. saturation theory
C. complementary color theory
D. trichromatic theory