In my physics textbook I've seen that heat and work are non mechanical and mechanical forms of transfer of energy. Why can't electrical or chemical or nuclear energy or energies like that be a form of transfer of energy? Why is it only heat and work?

I know two different descriptions of how light propagates in space; (1) like particles traveling and reflecting in straight lines. And (2) like waves spreading and interfering in space. And that both these descriptions are true. It seems to me that scenario (1) is how I perceive the world. I can ...