Every time I see a SF pic which has some simulated gravity by spinning I can't imagine this actually working. The latest SF I watched (mission to mars) had a wide rotating cillinder somewhere in the middle of a much longer cillinder which formed the main ship. Now imagine yourself moving from the front of the ship to the back of the ship, at some point you'd float through the spinning artificial gravity room. If you would float exactly through the center would you spin about your own axis? If you're floating a bit off center you would supposedly be swung to the outside of the cillinder? What force would be responsible for this effect? How can the rotational force of the room be transferred to you if you're not touching anything? I can imagine a simple earth based experiment by having a long hollow tube standing upright spinning around it's longtitudinal axis. If you'd drop a ball in there I don't think it would be swung out (sticking to the wall) before it actually hit the spinning bottom, which would finally transfer the rotational speed and swing it out?