NATS 1745 Lecture Notes - Lecture 10: Chromatic Aberration, Light Beam, Refraction
22 Jul 2017
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Document Summary
Made several fundamental discoveries regarding laws of nature studied optics invented calculus (fluxions) developed three laws of motion discovered principle of universal gravitation. 1687 published (cid:1445)principia - contains nearly all work on motion. Where he published his laws of motion and his law of universal gravitation. Completely changed the way physics is done. Most ideas developed initially in 1665-66 while on leave from cambridge during years of plague. Light beam moving from air into material (eg glass/plastic) Light beam slows down and changes direction. Each colour changes direction by a different amount. Each colour/wavelength of light has a diff focal point. Focal point: distance from the centre of a lens to the point where the two light beams cross. Causes problem with original design of telescopes. Original type of telescope made with pure lenses: called refracting telescopes. Chromatic aberration problem where diff colours of light come to a focus at a diff point.
