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- 22:10, April 13, 2012 diff hist +381 Talk:Perpetual motion machine →The Uncertainty principle doesn't invalidate Perpetual motion...
- 21:45, April 13, 2012 diff hist +120 User:DVMRoberts
- 03:04, April 13, 2012 diff hist +238 Talk:Perpetual motion machine →The Uncertainty principle doesn't invalidate Perpetual motion...
- 21:27, April 12, 2012 diff hist +23 Talk:Perpetual motion machine →The Uncertainty principle doesn't invalidate Perpetual motion...
- 21:26, April 12, 2012 diff hist +153 Talk:Perpetual motion machine →The Uncertainty principle doesn't invalidate Perpetual motion...
- 21:02, April 12, 2012 diff hist +92 Talk:Perpetual motion machine →The Uncertainty principle doesn't invalidate Perpetual motion...
- 20:26, April 12, 2012 diff hist +959 Talk:Perpetual motion machine →The Uncertainty principle doesn't invalidate Perpetual motion...: new section
- 20:04, April 12, 2012 diff hist +459 Talk:Theory of relativity →Logic and the GPS