🎬the polarisation is proportional to the electric field within an isotropic medium that is contrary

the polarisation is proportional to the electric field within an isotropic medium that is contrary to non-isotropic medium

The animation demonstrates that in an isotropic medium, the polarization $\vec{P}$ is always parallel and proportional to the electric field $\vec{E}$. In contrast, a non-isotropic medium can cause $\vec{P}$ to vary in both direction and magnitude, showing that the response to $\vec{E}$ depends on the material's internal structure.

Tensor Analysis of Electric Susceptibility in Anisotropic Media | Proof and Derivationviadean on Notion