Optical activity can vary with light frequency {dispersion, light}|. Higher frequencies cause more rotation, because photons have more energy.
If polarized light with different wavelengths passes through asymmetric medium, shorter wavelengths rotate plane more than longer wavelengths {optical rotatory dispersion} {Cotton effect}.
Materials with asymmetric-molecule electric forces can have refractive index different for left and right circularly polarized light {optical activity}|. Carbon can bond four different atoms, in two mirror-image forms.
5-Physics-Wave-Electromagnetic-Polarization
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Date Modified: 2022.0225