Let's not forget that two types of perpetual motion machines are defined. The first type is one that doesn't satisfy the First Law of Thermodynamics, while the second type doesn't satisfy the Second Law of Thermodynamics. And it is possible to design machines which satisfy both and are perpetual. Any watch based on solar energy for example. [[User:SilvioB|SilvioB]] 17:07, 3 July 2008 (EDT) | Let's not forget that two types of perpetual motion machines are defined. The first type is one that doesn't satisfy the First Law of Thermodynamics, while the second type doesn't satisfy the Second Law of Thermodynamics. And it is possible to design machines which satisfy both and are perpetual. Any watch based on solar energy for example. [[User:SilvioB|SilvioB]] 17:07, 3 July 2008 (EDT) |