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磁致旋光[Faraday Rotation] [2005-9-8]
iamet 发表在 Ω〖物理〗
| Given two rays of circularly polarized light, one with left-hand and the other with right-hand polarization, the one with the polarization in the same direction as the electricity of the magnetizing current travels with greater velocity. I.e., the plane of linearly polarized light is rotated when a magnetic field is applied parallel to the propagation direction. The empirical angle of rotation is given by
where V is called the Verdet constant (and has units of arc minutes cm-1 Gauss-1). In the quantum mechanical description, it occurs because imposition of a magnetic field alters the energy levels (cf. Zeeman effect). |
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