PSYC 100 Lecture Notes - Lecture 9: Color Vision, Subtractive Color, Additive Color

• School: Queen's University
• Department: Psychology
• Course: PSYC 100
• Professor: Jordan Poppenk

Document Summary

The adequate stimulus for vision is light. Light is a form of electromagnetic energy, made up of particles called photons. The colour or hue we see depends on the wavelength or frequency of the light, the brightness we see depends on the intensity of the light. Two characteristics of light waves are wavelength, distance from one crest to the next and amplitude, the height of each wave. Cornea: transparent covering of the eye, responsible for bringing light into the eye and acts as a lens to focus light. Pupil: the opening in the middle of your iris that admits light allowing it to hit the back of the eye (retina), changes size to increase or decrease the amount of light entering the eye. Lens: a transparent structure located behind the pupil, changes shape through the action of muscles , becomes more curved to focus on close items and less curved to focus on far items, known as accommodation.