| 摘要 |
An apparatus for converting radiant energy directly into a turning force includes a rotor, a stator, a photoelectric converters on one of the rotor and stator for convering a radiant energy such as light or heat into an electric energy, coils on the one of the rotor and stator and which is adapted to produce a magnetic field when it receives the electric energy due to the radiant energy without need of any brush, and magnets on the other of the rotor and stator for providing a turning force in response to the magnetic fields in the coils.
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