PSYC 215 Chapter Notes - Chapter 6: Focal Length, Roygbiv, Illuminance
Document Summary
The physics of vision - light and the eye. Light: radiant energy capable of stimulating receptors in the eye and evoking a visual sensation. Rays: light travels in straight lines or rays in all directions from a light source at high speed. A suitable lens will refract incident rays to converge to a point after passing form lens. Correct image from source = correct distance between lens and imaging surface: image will be inverted but keep topology (geometric relations) Spectrum of colours observed when sunlight is refracted through a prism by supposing that rays of different colours are differently refrangible . Waves: christian huygens: proposed that light propagates from a source in waves. Competitor of newton"s particle theory: thomas young. Addition of light cam resist in darkness. Light - electromagnetic disturbance in the form of waves . Rede ned views on the nature of light and development of quantum mechanics. Frequency change of light produced change in kinetic energy.
