Chapter 33 lecture - Chapter 33: sections 1-5 The Wave...

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Chapter 33: sections 1-5 The Wave Nature of Light Tuesday: mop up, problem solving MP due Thursday at 10 am I will close MP for good at 5 pm Friday Friday: Final Exam 6:00 or 6:30 pm? (see ctools for more info)
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The visible part of the EM spectrum Studies of visible light go back millennia……. Infrared “oxidizing rays” and ultraviolet “reducing rays” date to the early 1800’s
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Some Sources of Light Question 1: Which one of the following is not a source of visible light? 1. the sun 2. the moon 3. very hot objects 4. ionized gases 5. LED’s and lasers DEMO
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Black Body Radiation
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Refraction and Reflection air water θ a θ b λ air water incident ray refracted ray Light bends/refracts toward normal λ water < λ air water < fλ air c water < c air m medium vacuum KK c c n = = = 0 0 n , refraction of index the μ ε εμ n a sinθ a = n b sinθ b (Snell’s Law)
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Dispersion of light DEMO Question 2: Evidently the refractive index depends on wavelength λ. This
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Chapter 33 lecture - Chapter 33: sections 1-5 The Wave...

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