While recently reading a physics textbook and thinking about magic systems, I tried to perform a thought experiment I had problems with concluding, so I thought of asking for help. Here I explain the thought experiment:
An enabled person has a personal store of Mystical Energy X. With his mind, he can transduce X-Energy from this personal store into other forms of energy at some point in his surroundings (with some energy being lost as waste, because from physics and nature we know that nothing ever achieves perfect energy convertion, but that is not important for this thought experiment).
Now, from reading the physics textbook, I am reminded that energy can be divided into kinetic energy or potential energy.
Kinetic energy, in turn, can be divided into mechanical energy, thermal energy, electrical energy and electromagnetic radiation. If I try to imagine transducing X-Energy into any of these forms of energy, it is easy; the X-Energy simply turn into force, heat, electricity and light wherever the enabled person decides to.
Potential energy can be divided into gravitational potential energy, electromagnetic potential energy (which can be further divided into electric potential energy, magnetic potential energy, chemical potential energy and elastic potential energy), strong nuclear potential energy and weak nuclear potential energy. And this is where my imagination gives be trouble.
If I state that the enabled persons has an ability to increase the amount of any form of potential energy in any given system (a piece of matter, like gas, metal, a chair, a person, etc.), how would that phenomenon express itself? What would happen, from a physics standpoint, and more practically, how would such a phenomena of potential energy increasing "out of nowhere" look like to an uninformed observer in the vicinity?
As a secondary, optional question, why does it seem easier to imagine this ability with kinetic energy than potential energy?