Isotropy is uniformity in all directions. Precise definitions depend on the subject area. The word is made up from Greek iso (equal) and tropos (direction). Exceptions, or inequalities, are frequently indicated by the prefix an, hence anisotropy. Anisotropy is also used to describe situations where properties vary systematically, dependent on direction. Isotropic radiation has the same intensity regardless of the direction of measurement, and an isotropic field exerts the same action regardless… (More on Isotropic)