磁力永动难成真自从发明了磁铁，有人便想到利用磁力来设计永动机。本文上图便是一例。在这个设计今，外轮和内轮可以分别自由转动，里面整齐地嵌置许多条形磁铁，不过它们都是斜放的。这个永动机想利用磁铁同极相斥的性质。假如外轮固定，内轮可以自由地转动，初看，外轮的北? Magnetism permanent hard to come true Since the invention of the magnet, some people think of the use of magnetic force to design perpetual motion machine. This picture is an example. In this design, the outer wheel and the inner wheel can rotate freely, and many bar magnets are neatly embedded therein, however, they are all diagonal. This perpetual motion machine wants to use the same repulsion nature of magnets. If the outer wheel is fixed, the inner wheel can rotate freely, at first glance, the north of the outer wheel?