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lec23 - Announcement No lecture on Monday to compensate for...

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1 11/16/10 1 Announcement No lecture on Monday Nov 22, 2010 to compensate for evening exam given on Nov 4, 2010. Lecture Quiz scores will be updated over Thanksgiving break. After Thanksgiving break , please check your quiz scores. If you have questions, please make an appointment to see me or stop by during office hours. (Mondays & Wednesdays at 1:30-2:30 PM) 11/16/10 2 Wave-Particle Duality 1. Isaac Newton (1642–1727): Light is a stream of particles. 2. Christian Huygen (1629–1695): Light is a wave. 3. Thomas Young (1801): experimental proof that light is a wave by showing that light exhibits interference phenomena 4. Augustin Fresnel (1819): submitted a paper on the wave theory of light to explain diffraction to the French Academy of Sciences. If correct, there should be a “Fresnel bright spot”. An Academy test of this showed its existence. 5. James Clerk Maxwell (1860): wave theory of light 6. Albert Einstein (1905): particle nature of light to explain the photoelectric effect 11/16/10 3 Wave-Particle Duality Isaac Newton (1642–1727)
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