Lecture 16 Notes

Lecture 16 Notes - Recap of Mondays lecture EM radiation...

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Recap of Monday’s lecture EM radiation have both particle like and wave like properties. The Quantum description of EM radiation takes into account both type of behavior. Laws of reflection θ i = θ r Reflection can be specular and diffuse. When studying reflection we are mostly talking about specular reflection. Laws of refraction n a sinθ a = n b sinθ b if light goes from a to b and n a >n b it bends away from the normal and if n a <n b it bends towards the normal n a = c/ v a = λ 0 / λ a This means that for a given medium violet light has a larger refractive index than red light, and hence red light bends less than violet
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Huygens’s Principle every point of a wave front can be considered to be a source of secondary wavelets that spread with a speed equal to the speed of propagation of the wave.
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Huygens’s Principle Both reflection and refraction can be described with this wavelet mechanism
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Some Examples Flying aero plane in a box
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Disappear On Stage
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Lecture 16 Notes - Recap of Mondays lecture EM radiation...

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