Leonardo da Vinci’s Elegant Design for a Perpetual Movement Machine

Is per­pet­u­al movement pos­si­ble? Within the­o­ry… I do not know…. In prac­tice, up to now at the least, the reply has been a per­pet­u­al no. As Nicholas Bar­ri­al writes at Mak­ery, “as a way to suc­ceed,” a per­pet­u­al movement machine “ought to be freed from fric­tion, run in a vac­u­um cham­ber and be complete­ly silent”…