Or even at the smallest level (like, the size of an electron or a photon) is there all sorts of harmonic stuff going on there too?

Yes. Exactly.

Particles are wave form packets. They move around in the atom by pathfinding, a process I coined which describes the interaction of the frequency and harmonic relationship of a particle to the field emitted by the nucleus of the atom.

The particles orbits are precise and governed by the particles fundamental base rate frequency and its subsequent relationship with the nucleus. Because this atom is never isolated or static - all these particles are constantly absorbing and acting as conduits for other energy. And so the particles change orbits to either closer or further cycles around the nucleus and its field. A proton carries predominately positively biased wave forms relative to the nucleus while an electron carries predominately negatively biased wave forms. A neutron's waves are balanced between the two.

Your other question on this thread about moving mass is based upon the interaction and quantity of energy and its frequency relationship. Compatibility is an issue besides quantity.

A microwave will interact on your body while a radio wave will have almost no compatibility. The signals can have the same quantity of mass and yet different rates of interaction and influence.

Hit a pool ball with a cue and it imparts energy to the field of atoms and their mass. The atom always wants to reach ground state. It's mass is increased proportionately and then it loses this extra mass again. It requires a greater mass to move it, relative to its environment, and acceleration will be determined upon this mass and its interaction with yet other mass and the fields of energy which they actually are. The ball is just a bunch of atoms. Atoms are just a bunch of fields within fields made up of wave forms with a certain cohesive relationship and properties.

Heat, which is really the relative excitation levels of atomic structures interacting is one of the ways this energy is absorbed by other fields. It simply means that these particles cannot as quickly discharge their subharmonic waveform payload and carry this energy until they can discharge it into compatible surrounding structures.

All energy is in constant motion. Acceleration is the influx of energy into another structure, via these waveforms interacting, and relative to surrounding field structures, it accelerates and changes its position. Its trajectory is a vector. As it decelerates, it is because these wave forms of energy have passed into surrounding structures or fields.

All interaction is governed by these infintessimally small wave forms, their frequency, shape, polarity structure - and probably another thousand properties we have yet to identify and name.

If one could see the world as it is, one would see the fields, countless fields all pulsating and oscillating and regenerating. It would be a revelation of sorts, and one would see how everything in life is really very scientific and obeying laws of energy relationship. Even these posts and the human mind are governed by these flows of energy into existing fields.

All these properties and observations of the world around us will get more accurate and precise as time passes. Already we are at our technical observation limit and this is why deduction, math and calculation play so prominently in the quantum physics world. However, math is just a tool we use to help conceptualize these material interactions. Math, equations and their many component principles and elements can never quite work like real life, where ALL these functions occur and are at work, simultaneously and where undoubtedly many other factors we have not yet identified are also at work.