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Can high-frequency infrared radiation pass through a wall?

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I would doubt it is actually Rayleigh scattering, that makes infrared radiation not pass through walls. But the Rayleigh scattering cross section decreases with wavelength, as is is $\propto f^4$ (that's why the sky is blue and the setting sun is red: the blue light is Rayleigh scattered, while the red light is scattered with a much lower cross section). read more

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