Entropy is maximal at equilibrium. According to the fundamental equation
this demands that there is equilibration for every specific interaction term, namely,
thermal, mechanical, diffusive, and others. Relevant exemplifications are illustrated for
a number of important processes.
Keywords: Chemical potential, Concentration, Diffusive interactions, Earth’s
life, Electron transport chain, Energy sharing, Equilibration, Hurricane heat
engine, Intermolecular potential energy, Katabatic wind, Mechanical interactions,
Mixability, Mixtures, Potential wells, Snowflakes, Thermal interactions.
