This is the what the entire process of Faraday's Discovery is called and it has remained the principal of all motors, transformers, and all products that involve an coil that uses magnetivity to create or change electricity. However, we don't need an magnet anymore in the current day because humans have found an alternative. Since the magnet has a changing magnetic field to the coil that receives and created a surge of electricity, we can give the another coil an AC to let it have the attributes of the moving magnet. We will call this the emitting coil. The emitting coil's magnetic field will change because of the changing voltage from positive to negative so we wont have to move the coil anymore to let + and - change. The voltage changing from positive to negative in the emitting coil can be looked in another way such as an actual magnet facing the coil with it's positive side and then going through the coil to let it's negative side face the coil. This makes the magnet move to and away from the receiving coil and based on faraday's discovery, we know that this will produce electricity. Now, we can just have two coils facing each other. One will be the emitting coil and the other will be the receiving coil, the emitting coil will emit an Alternating current and the receiving coil will receive it. This is how we can transport electricity wirelessly. This is the most important aspect of our wireless charger and it's science.
Michael Faraday first discovered in 1830 that if a magnet is moved towards a coil, a small surge of electricity would be generated and it would show up on a special device used to test electricity by making a needle move left. But if the magnet stopped, there would be no more electricity. Faraday also noticed that when he pulled the magnet away from the coil, the needle would also turn showing electricity but in the opposite direction than before. What this meant was that when he moved the magnet near to the coil, a positive or negative voltage will be produced. And when the magnet gets moved away, the opposite of that voltage will be produced. We call this coil the recieving coil.
This is the type of electricity that was generated in the coil from Faraday's discovery. The voltage keeps on changing raging from a positive voltage to a negative voltage and then back and forth and back and forth. The motion of the magnet was also a example of AC because it changed the voltage in the coil positive to negative and over and over again.
There are 2 terminals to deliver the electricity and the others are for data