To generate revolving energy of magnetic substance, by revolving the magnetic substance by using the magnetic field energy which permanent magnets have.

Above a plurality of permanent magnets 1 wherein the same poles are in contact with each other or adjacent to each other, magnetic substance 5 having a rotary shaft 3 is installed. The shaft 3 is rotatably retained by an unmoving part which is vertical to the upper plane 1b of the permanent magnet groups and does not move to the permanent magnets. When the permanent magnets are brought into contact with each other or made to approach each other through points or lines or planes, magnetic fields are arranged in order, at an angle to a plane. By rotatably retaining the magnetic substance with the rotary shaft, the magnetic substance effectively sevolves, and magnetic energy is converted to revolving energy, which can be used for electric power generation.