PSYC 2390 Lecture Notes - Lecture 4: Outback, Retina, Diabetic Retinopathy
22 Mar 2016
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Document Summary
Wavelengths of light between 350-750 appear as colour. Achromaic colour: white, grey, black, white is equal amounts of all the wavelengths of light, grey is equal amounts of not as much wavelengths of light, black is equally no wavelengths of light. Saturaion: purity of colour, pure (saturated) monochromaic (1 wavelength) light. Colours on visible spectrum: desaturated (not pure, made up of a mixture of wavelengths) light. Sunlight is white light, lightbulbs at home have more longer wavelengths making it more yellow. A white light source projecing on a prism divides up the wavelengths into all the colours of the visible spectrum. We only have 3 types of colour receptors. You can match any pure colour to a mixture of 3 monochromaic lights. They are metamers: 2 colours that look the same but have a diferent composiion of. This is because we have 3 colour receptors wavelengths. Because we don"t have a cone that is sensiive to each individual colour.
