NATS 1870 Lecture Notes - Lecture 5: Rhodopsin, Cyan, Incandescent Light Bulb
17 Oct 2017
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Document Summary
Additive mixing happens because of how our cones respond to light. With additive mixing more light enter the eye which makes the mixture paler, moving closer to white. When all cones are activated fully and equally we will see white. Adjusting to levels of light by rods, our eye becomes more sensitive to light. We have a higher number of rhodopsin molecules when you are in a dark area. Small number of photons can be detected by a large number of rhodopsin molecules. A sudden burst of light (bleaching) occurs when photons flood the eye and send an overload of messages to the brain and you experience a momentary blindness: colour constancy. The ability to discern colour, independent of light conditions. Your eye can automatically correct for the colour of the light source and the intensity of the light source. The entire field of the cone responses are inter compared with one another. (i. e candlelight vs sunlight)
