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Physics · L4 · How Maxwell's Equations Generate a Self-Propagating EM Wave

How a changing electric field and a changing magnetic field continuously regenerate each other, letting the disturbance propagate through space without a medium.

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📡 Source: accelerating charge(e.g. oscillating antenna current)Oscillating electric fieldcreated near the sourceOscillating magnetic fieldperpendicular to ENew oscillating E fielda bit further awayNew oscillating B fieldfurther awayWave continuesat speed c = 1/√(μ₀ε₀)🌌 Propagates through vacuum —no medium requiredAmpère-Maxwell law: changing E → circulating BFaraday's law: changing B → circulating EAmpère-Maxwell lawFaraday's law

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