An isotropic medium is one such that the permittivity, ε, and permeability, μ, of the medium are uniform in all directions of the medium, the simplest instance being free space. Optical isotropy means having the same optical properties in all directions.

What is a isotropic material?

Isotropic materials are materials whose properties remain the same when tested in different directions. ... Common isotropic materials include glass, plastics, and metals.

What is meant by isotropic dielectric medium?

[¦ī·sə¦trä·pik ‚dī·ə′lek·trik] (electricity) A dielectric whose polarization always has a direction that is parallel to the applied electric field, and a magnitude which does not depend on the direction of the electric field.