Electromagnetic induction is that an induced current and an induced electromotive force will be generated in the closed circuit coil when a part of the coil cuts the magnetic field line. Magnets are essential in during the process. In this paper, we found that the induced current and induced electromotive force can be still generated in the closed circuit coil without external magnets. In addition, when light, heat and wind energy are applied, the induced current and induced electromotive force generated in the coil will increase. This research result further proves the Collision Electro—Magnetic Theory (CEMT) that we put forward earlier. Air movement will be accelerated by light, heating or wind blowing, and the increase of collision strength and collision frequency will lead to the increase of an electromagnetic field strength, thereby resulting in the increasing of the induced current and induced electromotive force. This is a completely innovative approach to energy harvesting, which opens up new possibilities for non-electromagnetic induction. Just like the invention of electromagnetic induction by Faraday in 1831, the induced current is in the microampere level. But it is a milestone progression.