PSYCO275 Lecture 9: PSYCO 275 2017 WINTER- CHAPTER 9 VISION
23 Apr 2017
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For example rattle snakes can see infrared light (greater than 760 nm) therefore can also detect warm blooded animals that emit ifr in the dark. Properties of light: light is a function of two things a) b) Amplitude (how tall): determines intensity of a wavelength and its brightness. Therefore the greater(or taller) the amplitude the brighter the light. Note that brightness does not effect the color perception of an object. The cornea works with our lens to bend light into the retina. It makes up 15% of our outer eye while the sclera makes up 75% (if you did not know, the sclera is the white part of eye) The pupil is the dark whole in the middle of the iris that controls the amount of light that passes from the cornea to the retina. Iris is the colored ring of muscle that surrounds the pupil. When exposed to bright lights: constriction occurs in our pupil.
