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Physics · L4 · Polarization: Unpolarized Light Through Two Filters

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Unpolarized light passing through two polarizing filters at different relative angles, from full transmission to a fully crossed, dark result.

by @openstemUpdated Physics
🕶️ Unpolarized light I₀Polarizer 1(vertical transmission axis)Polarized light, I₁ = I₀/2Polarizer 2 at angle θto Polarizer 1θ = 0° (parallel axes)I = I₁ · cos²(0°) = I₁θ = 45°I = I₁ · cos²(45°) = I₁/2🚫 θ = 90° (crossed axes)I = I₁ · cos²(90°) = 0

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