Are Perpetual Motion Machines Possible? | Impossible Science at Home

Is this perpetual motion?•••Physics says that perpetual motion is impossible because there is always some kinetic energy being lost to heat due to friction. So how is it that the ball is always returning to the same point on the track?•••Beneath the cover is some cheeky electronics that tell an electro magnet to turn on and off at exactly the right time to keep the ball moving. This magnet is silently adding energy in to the system, giving the illusion of perpetual motion!•••#perpetualmotion #ph

Perpetual Motion: Revolutions in 17th-Century Science and Music