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Eric's History of Perpetual Motion and Free Energy Machines - Provides a timeline of attempts to solve the holy grail of energy production, beginning in the 13th century.
Museum of Unworkable Devices - Offers a look at the physics of these proposed devices, profiles of perpetual motion pioneers, and a defence of the quest for perpetual motion.
Perpetual Motion - Describes several different models of perpetual motion machines.
Perpetual Motion Machines - Looks at how to figure out why a particular design won't work.
Perpetual Motion Page, The - Offers several designs.


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Directory > Science > Alternative > Free Energy > Perpetual Motion Machines