Effect of Magnetic Fields on the Optical Density of Magnetic Emulsions With Low Interfacial Tension

In this letter, the features of the optical effect of changing the optical density of a magnetic emulsion with a low interfacial tension areinvestigated. A change in the sign of the effect was found with an increase in the duration of exposure to a longitudinalmagnetic field. The interpretation of the effect is based on the approximation of anomalous diffraction. It is shown that the change in the sign of the effect of changing the optical density is associated with the coalescence of microdroplets of the magnetic emulsion under prolonged exposure to a magnetic field.