NATS 1745 Lecture Notes - Lecture 10: Double-Slit Experiment, Corpuscular Theory Of Light, Silver Chloride
15 Feb 2016
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Document Summary
What is light? a form of energy, particle (not) and wavelength. Particle vs light: newton: particle: corpuscular theory (light has tiny particles in them), if particle then a single line through the slit, huygens: proposed wave theory. 1801: thomas young performed double slit experiment : verified wave like nature of light o. What happens is a source of light meets another source of light on the screen, so sometimes light sometimes dark. Wavelength is the distance from one peak to next peak. Half height of wave is amplitude relates to brightness. What happens when 2 beams of light meet + interact: one extreme. In-phase waves peaks align with each other. Hence add together new waves generated with 2x amplitude --- produces bright spots on viewing screen. Out of phase waves --- peak aligns with a trough. It doesn"t always have to be in one of the two extremes.
