Electromagnetic quantities in a polarized medium

The non-polarized medium is a special case. In general, polarization does take place, and the electromagnetic field is defined by two tensors 4 and4 F, each dependent on six quantities which are the components of the vectors  

The electromagnetic balance equations then take the form  

From this, we deduce the two groups of Maxwell equations for polarized media  

Generally, though, we define the electrical and magnetic polarizations  

The four vectors D, H, E, B are linked, two by two, and we can write the following formidas, for a meditun at rest  

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