Magnetic optical rotation dispersion MORD

From another point of view MCD can be regarded as the absorptive counterpart of magnetic optical rotation dispersion (MORD) the well-known Faraday effect. This is the reason why in the past the spectra were given in the units of natural optical rotation per magnetic field... 

Faraday found experimentally that all substances show this effect in presence of a magnetic field (Schatz and Me Caffery, 1969), leading to Magnetic optical rotation dispersion (MORD) and Magnetic circular dichroism (MCD) (Caldwell and Eyring, 1976 Dawber, 1964 Foss and Mccarvil, 1965 Schatz et al., 1978 Thome, 1977). Experimentally however, ORD and MORD were never measured extensively contrary to CD and MCD. 

Figure 3 The Faraday Effect within magnetic optical rotatory dispersion (MORD) spectroscopy. A plane polarized beam is rotated by a magnetic field applied parallel to the axis of propagation. The rotation is defined as positive if the beam is rotated to the right in a clockwise direction when viewed toward the source (a). The original definition of Icp and rep within CD spectroscopy—fight plane polarized in the yz-plane can be described in mathematical terms as being comprised of left or right circularly polarized components of equal phase and amplitude (b). The perspective is depicted schematically toward the source. (Reprinted from Mack, Stillman and Kobayashi, Elsevier 2007)...

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