PSYC 215 Chapter Notes - Chapter 6: James Clerk Maxwell, Christiaan Huygens, Refraction
20 Nov 2018
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Chapter 6: vision - the light and the eye. Light travels in straight lines or rays in all directions from a light source at high speed. Refraction: change in the direction of a light ray as it passes from one transmitting medium to another. A suitable lens will refract incident rays to converge to a point after passing through lens. The correct image from a source will be created if correct distance between lens and imaging surface. Image will be inverted but keep topology (geometric relations: light as particles. Newton - believed that rays = stream of particles that bounced of an opaque surface to create reflections. Refractions occurred as the particles entered a transparent medium at and oblique angle and were deflected in their path. Spectrum of colours observed when sunlight is refracted through a prism by supposing that rays of different colours are differently refrangible (i. e. different colours have different refraction capabilities: light as waves.
