Perpetual motion—it's fun to say that. For some people, perpetual motion machines hold the secret to everlasting free energy that will save the world. To them, it's a machine that is just beyond ...

Leonardo da Vinci, back in 1494, said: Oh ye seekers after perpetual motion, how many vain chimeras have you pursued? Go and take your place with the alchemists. There was a rumor in the 8th ...

Since we found out about energy, right up until the point we found out it violated the laws of physics, people have dreamed of creating a perpetual motion machine. Perpetual motion machines are ...

Among impossible machines, perpetual motion is in a class of its own. The idea of creating unlimited energy has burned through humanity for centuries, that somehow a device could work forever ...