In Gemology , Separation refers to the identification process criteria of species of minerals, of treatments made to these minerals, and of natural or synthetic origin.
In audio mastering, a ''separation'' is a single track containing one or more major song elements. When all ''separations'' are recombined, the 2-track mix is recreated (see Separation Mastering ).
In topology, two sets are called Separated if each is disjoint from the other's closure.
In Fluid Mechanics , separation refers to a phenomenon where a fluid flows along a surface for some distance, but due to adverse pressure gradients, flows away from the surface rather than following it further. In other words, it is what happens when the Coanda Effect can no longer make a fluid "stick" to a surface. Examples are a wing stall, and the separation along the sides of bluff bodies which lead to wake formation and pressure drag.
