What's the difference between i.e. and e.g.?
isotropic i·so·trop·ic (ī'sə-trŏp'ĭk, -trō'pĭk)
Identical in all directions.
Identical in all directions; invariant with respect to direction. For example, isotropic scattering of light by a substance entails that the intensity of light radiated is the same in all directions. Compare anisotropic.