Magnetic Circular Dichroism
Magnetic circular dichroism (MCD) is the differential absorption of left and right circularly polarized (LCP and RCP) light, induced in a sample by a strong magnetic field oriented parallel to the direction of light propagation. MCD measurements can detect transitions which are too weak to be seen in conventional optical absorption spectra; they can also probe paramagnetic properties and the symmetry of the electronic levels of the studied systems, such as metal ion sites.
Read more about Magnetic Circular Dichroism: History, Differences Between CD and MCD, Measurement, Applications, Theory, Example On C Terms, Example On A and B Terms
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—Henry David Thoreau (1817–1862)