I am making a Puzzle game based on Coulomb's Law - opinions and playtests?

[Instability]

Hi all, 

During my PhD when I was most frustrated with research, I started working on a puzzle platformer based on electrostatic calculations. By now, my PhD is finished, and the game is still a work-in-progress. I recently compiled a new demo build with the first five puzzles and I was hoping to find people here who might be interested in the concept, and contribute a few comments on the demo. I would be grateful for feedback on the concept, as well as the demo, particularly if you get stuck somewhere. 

A video of the game (links to the most recent build are in the youtube video description):

https://www.youtube.com/watch?v=Iyu8UukSjyk