Which mechanism causes signal degradation when an RF electromagnetic wave propagates through humid air?

💡 Explanation

When an RF wave propagates through humid air, absorption occurs because water molecules have rotational modes that resonate with frequencies in the RF spectrum, converting wave energy into kinetic energy. Therefore absorption by rotational modes results, rather than refraction, dispersion, or reflection, which require other atmospheric or surface effects.

• Which consequence results when latent heat capacity is ignored during rapid phase transition in a cryogenic cooling system?
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• Which consequence occurs when fluid viscosity dominates in pipes?
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