历史上最著名的第一类永动机是法国人亨内考在13世纪提出的“魔轮”。轮子中央有个转动轴,轮子的边缘等距地安装着12根活动短杆,每个短杆的一端装有1个铁球。亨内考认为,魔轮通过安放在转轮上一系列可动的悬臂实现永动,向下行方向的悬臂在重力作用下会向下落下,远离转轮中心,使得下行方向力矩加大;而上行方 The most famous type of perpetual motion machine in history is the “Magic Wheel” proposed by the French Henneca in the 13th century. There is a rotating shaft in the center of the wheel. Twelve movable short rods are equidistantly mounted on the edges of the wheels, and one iron ball is mounted on one end of each short rod. Hengnei test that the magic wheel placed on the runner through a series of movable cantilever permanent movement to the downward direction of the cantilever under the action of gravity will fall down away from the wheel center, making the torque down the direction of increased; and Upside