In this thesis, Spectral method is used to analyse the scattering characteristic of Frequency Selective Surfaces (FSS).

本文用谱域方法研究了频率选择表面(FSS)的散射特性。

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This refraction eliminates both the red end of the spectrum (red light is not bent enough by the air layer to form part of the second image) and the blue frequencies (which are scattered away: this selective scattering is why the sky is blue).

ECONOMIST: In a flash