PSY280H1 Study Guide - Midterm Guide: Optic Chiasm, Lateral Inhibition, Electromagnetic Spectrum

• School: UTSG
• Department: Psychology
• Course: PSY280H1
• Professor: Matthias Niemeier

Document Summary

Lecture 6: first steps in vision (ch 2) Light: energy produced by vibrations of electrically-charged material. Takes up a very small portion of the electromagnetic spectrum. Oscillation traveling through medium through energy transfer of particles (no permanent displacement of the medium occurs) A quantum of visible light demonstrating both particle and wave properties. Absorption: to take up light or energy and not transmit it at all e. g. when light travels from a star, it encounters dust, vaporized water etc. Scattering: to disperse light in an irregular fashion e. g. when light travels from a star, it is sometimes scattered by various particles. If the object is light in colour, the light will be reflected (redirection) If the object is dark in colour, the light will be absorbed (transformed to other forms of energy e. g. heat) Diffracted: light is bent or has spread out waves (e. g. waves of light encountering a narrow aperture/obstacle) Cornea: transparent window where light photons are transmitted through.