PS262 Study Guide - Final Guide: Color Blindness, Lightdark, Photon

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22 Apr 2017
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Unique/pure colours: red, yellow, green, blue, red= long wavelength, yellow=medium, blue=short wavelength. Saturation: intensity of the light, can be lighter/dimmer, less saturated colour has more white. Chromatic: red/green/blue, occur when come wavelengths are re ected more than others. Achromatic: white gray black, light is re ected equally across the spectrum. Re ectance curves: plots of the % of light vs. wavelength, x axis: wavelength, y axis: refectance. Selective transmission: canberra juice selectively transmits long wave light that appears red, lime juice selectively transmits medium wave. Transmission curves: light transmitted vs. wavelength. Additive colour mixture: mixing lights involves adding up all the wavelengths of each light. Subtractive colour mixture: mixing paints, wavelengths are absorbed. Retina sensitive to 400-700nm on the electromagnetic spectrum. The colours of objects are associated with what wavelengths are re ected (for opaque) and transmitted (for transparent) Mixing lights causes more wavelengths to be re ected (each adds)