Kevin H. answered • 07/08/19
Tutor
5
(3)
Former Chemical Engineering Professor
Think of flux as penetration of a barrier. Some examples:
Light penetrating a window.
Energy leaving a boiling pot of water in the form of heat (it is hot on the outside AND inside).
and for mass:
You inflate a balloon, but, over time, it deflates.
The flux would be measured by the mass of air leaving the balloon normalized (or divided by) the surface area of the balloon. In other words, how many grams of air exit per square centimeter.
Flux is not a rate as rates are normalized by time, but it is an intensive variable.
