【摘要】 当平面波入射到不同介质的分界面时．会产生反射与折射。对有耗介质,或在界面处产生全反射现象时，折射角为复数。复数折射角常使人感到困惑。本文将给出在不同情况下由复数折射角导出的等相面行进方向角和相速度以及等振幅面的衰减方向角和衰减常数的简洁计算公式，从而揭示复数折射角的物理意义。更多还原

【Abstract】 When a plane wave is incident on an interface between two different media.reflection and refraction will occur. For lossy media. or when a total reflection occurs on theinterface,the refraction angle is complex. This kind of complex refraction angle often makes peopIeconfusing. This paper presents succinct formulas for deriving practical forward angle of constantphase plane, phase velocity along with the forward angle of constant-amplitude plane and theattenuation constant from complex refraction angle under different circumstances. And thereby thephysical significance of complex refraction angle is revealed.更多还原