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slides21all - EM Wave Generation – p EM Wave Propagation...

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Previous week Mechanical waves satisfy the Wave Equation 2 D ∂x 2 - 1 v 2 2 D ∂t 2 = 0 – p.
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Today make up demo for 9:20 lecture. Maxwell’s Equations have wave-like solutions. – p.
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Reflection The end of the rope is fixed. Wave is reflected with sign change. – p.
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Reflection The end of the rope can move. Wave is reflected without change of sign – p.
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Energy transport Mechanical waves transport energy from source to destination. – p.
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Energy transport Mechanical waves transport energy from source to destination. Electromagnetic waves transport energy as well – p.
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EM Wave Generation – p.
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EM Wave Propagation Near the antenna Far away
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Unformatted text preview: EM Wave Generation – p. EM Wave Propagation Near the antenna Far away B E Fig. 32-8 – p. Plane Wave Fig. 32-9 – p. Maxwell’s 3 rd Equation (Faraday’s Law) – p. Maxwell’s 4 th Equation (Generalized Ampere’s Law) Fig. 32-11 – p. 1 The Bottom Line Maxwell’s equations imply that E and B satisfy wave equations: ∂ 2 E ∂x 2-1 c 2 ∂ 2 E ∂t 2 = 0 ∂ 2 B ∂x 2-1 c 2 ∂ 2 B ∂t 2 = 0 with velocity v = c . – p. 1 Electromagnetic Waves Fig. 32-12 – p. 1 EM Wave Detection Fig. 32-19a – p. 1 EM Wave Detection Fig. 32-19b – p. 1 Energy Transport – EM waves Fig. 32-14 – p. 1...
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