PSYC 2390 Chapter Notes -Color Blindness, Blauw-Wit Amsterdam, Color Vision

• School: University of Guelph
• Department: Psychology
• Course: PSYC 2390
• Professor: Lana Trick

Document Summary

Nanometer (nm) 1 / 1 billion m. Colour researchers consider red, yellow, green and blue to be basic colours: extraspectral colours: do not appear in spectrum (pink) Hue: wavelength of the light: see short wavelength light (blue, 400nm) and long wavelength light (red, 700nm, black absorbs most light, white reflects most light. All contain no hue, achromatic colours: green absorbs all colours and reflects green (shown in reflectance curves) Selective reflection: reflecting some wavelengths more than others. Selective transmission: only some wavelengths pass through substance (e. g. cranberry juice and wavelength red), for transparent objects. Brightness: amplitude: short amplitude (dim) vs. high amplitude (bright) Saturation: how pure the colour is: max saturation = monochromatic light (light of only 1 colour, only 1 wavelength) pure, min saturation = mixtures of all lights (e. g. white, grey, black. [desaturated]: most colours we see in day to day life are desaturated or unsaturated. Less saturated: olive green (green+brown), pink (red+white)