How to use a 4x4 (DC) motor to make a small generator

Children love to learn. Yes, the course above is a bit more in-depth. First of all, we need to understand the law of conservation of energy. The energy will not increase or decrease, it will only change the mode of energy. For example: 1 kilowatt hour of electricity can boil water. It is transformed into thermal energy and is absorbed by the water, the ambient air and the kettle. Once the water cools, the thermal energy is transferred to the surrounding air. The thermal energy present in the earth's air is ultimately emitted. towards space in the form of thermal radiation. Because space is so big, even though there is a lot of energy scattered in space, it is very weak in each small space. In your question: it is not possible to generate electricity by yourself and train yourself to spin at the same time. You can only generate electricity - store electricity - then push the motor to turn din this sequence of steps. Or it's also possible. to make a generator and use an external force to generate electricity and power the rotation of another motor. But in this way, mechanical kinetic energy is converted into electrical energy - and electrical energy is converted into mechanical kinetic energy. this conversion process is only 80%. After two conversions, only 64% of the energy is transferred, and the remaining 36% is lost during the conversion process. They turn into calories and are consumed, so there is no need to do multiple rounds. in the process if it can be done directly. Second: the battery converts chemical energy into electrical energy, and the electricity storage process converts electrical energy into chemical energy. In this process, some part will also be lost and dissipated as thermal energy. A final word for you: the distancence in a straight line between two points is the shortest, and the best way to solve the problem is to reduce the intermediate conversion links. There is no perpetual motion machine in the world. Nuclear energy is the energy with the highest energy density discovered to date.