RegisterIsotropic medium, anisotropic mediumIsotropic medium is of the same electric and magnetic properties in all the directions (of the same permittivity and permeability). Therefore, magnitude of the x-component of electric displacement density Dx depends on the magnitude of the x-component of the electric field intensity Ex only: From the mathematical point of view, permittivity and permeability are scalar quantities. Anisotropic medium is of different properties in different directions. Therefore, the x-component of the electric displacement density Dx depends (in general) on all the three components of electric field intensity: From the mathematical point of view, permittivity and permeability are tensors, i.e. matrices of the size 3 x 3. Plasma, where steady magnetic field exists, or steady-magnetized ferrite, are examples of anisotropic media. Back
|