One of these projects, on which an elaborate report had actually to be submitted to the Emperor, was a device for which it was claimed that it had solved the problem of perpetual motion.
Space is infinite, and there is an illimitable multitude of indestructible, indivisible and absolutely compact atoms in perpetual motion in this illimitable space.
He accidentally leaves his car keys behind but one wonders whether a car would have been much use to this man of perpetual motion.
Cayce also suggested humans would invent a perpetual motion machine that could provide an environmentally-friendly, sustainable means of transportation.
Atmos clocks are almost perpetual motion machines that never need winding or adjusting.