Apologies if this should go somewhere else, if so, mods please do move it. Anyway, what I wanted to ask was this, what is the nature of energy? If energy just [i]is[/i] then what can we know about its form? Basically the question I am asking can be split into two outcomes. Is energy all the same stuff and the only reason we talk about different types of energy is due to context dependent attributes, i.e. heat energy is thus because the energy aqcuires heat from some source. [i]Or[/i] are there in fact all different types of energy, in which case, what is psi?
Apologies for the longwinded post but I thought this might make an interesting point to discuss, besides which my knowledge of physics is fairly limited so if anyone has a definitive answer, that would also be useful.