3. Rotation. Circular dichroism
Some media are said to be "optically active", or rotatory. This translates into two closely related phenomena: optical rotation and circular dichroism.
3.1 Optical rotation
Optically active media have the property of rotating the plane of polarization of the light passing through them.
According to Fresnel's construction, a plane wave is the superposition of two circularly polarized waves, right and left, of equal amplitudes. If one of the waves travels faster than the other in the medium, one of the two vectors, or...
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Rotation. Circular dichroism
Optically active molecules
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