Why can we make heat without expunging cold, but not the inverse (make cold without expunging heat)?

Question

Why can we make heat without expunging cold, but not the inverse (make cold without expunging heat)?

In: Physics

Answer 1

Because heat is a form of energy; cold is merely the absence of it. In a very real sense, heat is something, while cold is nothing (the absence of that something). So you can make something (make heat, by converting other energy to heat), but you can’t make nothing. You can only take the something that exists and move it elsewhere.