Lec-23 - Previous Lecture EM waves satisfy the Wave...

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Previous Lecture EM waves satisfy the Wave Equation 2 E ∂x 2 1 c 2 2 E ∂t 2 =0 2 B ∂x 2 1 c 2 2 B ∂t 2 =0 – p.
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Today Upcoming HW assignments Geometric vs. Physical Optics Mirrors – p.
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Homework HW-24 is due tomorrow, Nov. 16, and then HW-25 is not due until Nov. 28. HW-25 will be split into parts a and b, both due Nov. 28, so don’t put it off until the last night. Part of HW-25 will be ray diagrams to turn in at recitation. – p.
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Models of Light Wave model We just derived wave equation for EM waves. Ray model Sometimes it’s enough to assume light rays follow straight lines. Photon model Stay tuned for Physics 31 next semester. The ray model is also called “Geometric Optics”, and the wave model is called “Physical Optics. – p.
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Geometric/Physical Optics Geometric Optics – Ray model location and size of images formed by mirrors and lenses.
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Lec-23 - Previous Lecture EM waves satisfy the Wave...

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