Continuing on the previous theme. I feel that these would be suitable for a background if I can manage to render them slightly larger. I’m working on it. If I feel like it. What I’m doing here is I’m drawing lots and lots of paths through electric fields. The line is always 80 clockwise from the local direction of the field. Red and blue are not positive and negative, these charges are all considered the same for this since if they were of different sign you would have singularities and that’s not very pretty. The current resolution of the program is locked at 1000×700 so it’s just small enough to be useless as a background for anything larger than a cellphone. Feel free to give it a try though. If you hold down the mouse button, new lines will only be generated within a small radius of the mouse.