I was having a class on Physics when out of nowhere emerged the thought: "Why can't we have guns without gunpowder?"
I kept thinking on a solution. And I thouht about something that, in my mind, made sense:
1) Get two long, rectangular magnets. (About 1 Metre each)
2) Carve a semi-cricle in each, so that their concave parts repel each other (negative and negative or vice-versa). Make it so that when put together, the concave parts form a tube runs through them.
3) Tape them tightly together, allowing a repelling field to be created inside the tube.
4) Insert a Metal ball in the tube and push it with a wood stick until it reaches the middle of the tube.
5) The ball should fly out, the other way, with a great speed.
What do you guys think? Would this work? Should I test it? Please comment.