In physics, engineering and materials science, a bi-isotropic material is an isotropic medium where the electric and magnetic flux densities are linearly coupled to both the electric and magnetic fields via scalar constitutive relations, including magnetoelectric coupling terms. A major subset of such materials, known as Pasteur media, are optically active: they can rotate the polarization of light in either refraction or transmission.
In physics, engineering and materials science, a bi-isotropic material is an isotropic medium where the electric and magnetic flux densities are linearly coupled to both the electric and magnetic fields via scalar constitutive relations, including magnetoelectric coupling terms. A major subset of such materials, known as Pasteur media, are optically active: they can rotate the polarization of light in either refraction or transmission.
Source: Wikipedia "Bi-isotropic material" · CC BY-SA 4.0
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