PSYB51H3 Lecture : Chapter 2
6 Jun 2011
School
Department
Course
Professor
Document Summary
Light is a form of electromagnetic radiation (energy produced by vibrations of electrically charged material) oonly make up tiny portion of this spectrum ( gamma rays w/ shortest wavelength to radio/tv waves with longest wavelength. visible light is from 400 700 nm (10 ^ -9 m) in wavelength = 400 violet & 650 red. 2 ways to conceptualize : as wave when it moves around the world & as photos when its being absorbed. once star- light enters the atmosphere some photos will be absorbed & some will be scattered . But most will hit the surface of an object. Light strike a light-coloured surface most of light will be reflected to re-direct something that strikes a surface especially light, sound, or heat usually back toward its point of origin ostrike a dark-surface is absorbed. Light neither reflected or absorbed is transmitted to convey something form one place or thing to another.
