Michael Faraday - A Man Way Ahead Of His Time

How is it possible to create electricity with simple everyday objects?

Believe it or not, we need to thank Michael Faraday for his contribution to the fields of electromagnetism back in the early 1800's. Michael Faraday discovered electromagnetic induction, which means that a voltage is produced across a conductor in a changing magnetic field. In simple terms this means that if a magnet is moved near a wire, a voltage is produced. This discovery is called Faraday's Law.

Does this mean we have free energy?

Not really, because there is another factor called electromotive force (EMF) which has to be overcome in order for a voltage to be produced. To overcome EMF, there needs to be greater energy apply than produced. For example, if you simply ran a generator with a motor powered by a battery, and tried to recharge the battery with the power from the generator, the battery would eventually drain and die because it takes more power from the battery to run the generator, than the generator would ever produce because of EMF.

Is there an example of Faraday's Law?

The Faraday Flashlight uses this concept of electromagnetic induction, Faraday's Law, where you shake the flashlight causing a magnet to slide back and forth through a wire coil inside the flashlight. As the magnet moves, a voltage across the wire coil is produced. At one end of the coil is a capacitor which in an electrical device that stores the power so the flashlight can operate after you finished shaking it.

So how is this EMF overcome?

Simple - the power you have in your arm to shake the flashlight is much greater than the EMF in a Faraday Flashlight because the flashlight is small in comparison to your arm. The energy you are expending consumes calories. However, if this device were the size of a turbo-generator used to power a city, there is no way we would be strong enough to overcome EMF and the turbine simply would not turn to create electricity. That is why turbine generators use the power of flowing water to turn them.

Conclusion....

We cannot create free energy, although many people have tried, because there are many losses in a mechanical system, such as friction, the mass of an object being turned, drag from air, etc. and of course EMF.

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