This is physics. But molecular interaction of atom , as described by quantum physics, energy gradient, energy gathered, energy released by radiation.
I mean all these are beyond steemit syllabus . These are classroom subject with mathematical explanation not made for history reading.
On that you are right :) but in the title is specified (Heavy version). I know there are several physicists here on Steemit, some of whom are my colleagues, and also several students, with this post I meant to reach them. soon I will also publish a more "profane" version ;)