Changes

*For an interesting example of an attempt to build a machine that will stay in motion for a long time, see [http://www.longnow.org/projects/clock/ The Clock of the Long Now]. This is a serious effort to encourage long-term thinking by solving the engineering ''and social'' problems involved in building a clock will actually run for ten thousand years.

*For an interesting example of an attempt to build a machine that will stay in motion for a long time, see [http://www.longnow.org/projects/clock/ The Clock of the Long Now]. This is a serious effort to encourage long-term thinking by solving the engineering ''and social'' problems involved in building a clock will actually run for ten thousand years.

*It is not impossible becuase The Lord could make a perpetual motion device if he so wished it. --[[User:Cranky Joe|Cranky Joe]] 00:32, 14 March 2007 (EDT)

*It is not impossible becuase The Lord could make a perpetual motion device if he so wished it. --[[User:Cranky Joe|Cranky Joe]] 00:32, 14 March 2007 (EDT)

* It is possible to establish a flow of current in a superconducting ring forever, but that's all you get, and if you draw some of the current off to do useful work, there's just less in the ring. [[User:Teresita|Teresita]] 22:05, 7 April 2007 (EDT)

* It is possible to establish a flow of current in a superconducting ring forever, but that's all you get, and if you draw some of the current off to do useful work, there's just less in the ring. [[User:Teresita|Teresita]] 22:05, 7 April 2007 (EDT)

: If you draw off any energy from a pmm, and use it to power something, you would be increasing the amount of energy in the universe - thus creating something from nothing -> breaks 2nd Law of Thermodynamics. [[User:Wikinterpreter|Wikinterpreter]]

* If you draw off any energy from a pmm, and use it to power something, you would be increasing the amount of energy in the universe - thus creating something from nothing -> breaks 2nd Law of Thermodynamics. [[User:Wikinterpreter|Wikinterpreter]]