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The electric generator (also known as a dynamo, short for dynamoelectric) is a machine that generates almost all of the electricity used by man. This amazing machine can harvest electricity from a spinning coil of wire and a U-shaped magnet through a process known as magnetic induction. There are two main kinds of generators. One kind is a direct current, or DC generator. This generator generates a steady flow of positive and negative electricity. The other kind of generator is called alternating current, or an AC generator. This current switches from positive to negative many times each second. This kind of generator is also known as an alternator because the current alternates between positive and negative.
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The scientific name for the means of generation in an electric generator is Electromagnetic Induction. This means that the generator uses magnetism to generate, or induce electricity. Such scientists as Michael Faraday, and Marie Andre Ampere discovered this theory in the 1800’s.
The generator has two major components: a U-shaped magnet and a coil of wire suspended in the middle of the magnet. The magnet itself is split into two parts, or poles. These poles are called the north and south pole of the magnet. The two poles create a force field of attraction between them. This is why magnets stick together, or stick to refrigerators.
In-between the force field generated by the two magnets is a coil of wire. This coil is attached to a shaft, called a prime mover. The prime mover transfers motion energy to the generator. The coil of wire spins in the force field, generating a steady flow of electrons in the wire. This flow of electrons is called electricity.
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This is based off of a principal discovered in 1831 by Michael Faraday, an English Physicist. Faraday discovered that when he moved a coil of copper wire over a magnet, he could cause a compass needle to move. After a public demonstration of his discovery, a woman went up to Faraday and asked him “but of what use is it?” The woman did not realize that she had witnessed the discovery of electrical energy, the most important invention of modern history.
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 Victor Campos from Chile contributed:
I would like to help you with the translations. I am not an expert or something like that but if you like I can correct or modify what you have to give sense on your texts like this:
Albert Einstein nació en Ulm, Alemania la 14 de marzo de 1879. Cinco años más tarde, en 1884, él y su familia se trasladaron a Munich debido al nuevo trabajo de su padre. En 1901 lo naturalizaban como ciudadano suizo. Ocho años más tarde cuando Einstein era suizo a el le agradó el trabajo de su profesor de física teórica en la universidad de Zurich. A partir la 1911 a 1912 él tenía el mismo trabajo que un profesor en Praga. En 1913 lo eligieron para formar parte de la academia de ciencia en Berlín. Einstein recibió el reconocimiento de su pais natal Alemania obteniendo así la nacionalidad alemana en 1914. Él trabajó por 19 años como profesor en Berlín. A partir la 1920 a 1946 Él podía - oficialmente - ser profesor especial en Leiden, Holanda, también, pero debido a su emigración, él no trabajó para la universidad durante mucho tiempo antes de 1946. Debido al movimiento NAZI, Einstein renunció la ciudadanía alemana en 1933. Él se trasladó a los Estados Unidos y trabajó como profesor en Princeton, New Jersey hasta 1945. Él se hizo oficialmente americano en 1941. Albert Einstein murió el 18 de abril de 1955.
VCC
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Kirit M from India contributed:
to fuse two nuclei why don't we use the property that two similar charges moving in the same direction attract each other.
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Robert Michaels from United States contributed:
In the section concerning tools used circa 3,500 B.C., no mention was made of electricity. I saw a clay pot with two electrodes in it, with a wire connected to each electrode, dating back to 5,000 B.C. in the museum in Cairo, and another on Crete. So far, I have never seen any reports about this. Can anyone elaborate on this?
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Tony Gee from United States contributed:
i have a question:-how can the copper wire fields of the dyamo keep putting out electrons of a endless amount without being replaced after all electrons are used up. in the copper wire ,won't the copper wire turn into a isotope?i am a senior citizen retired electronic tech.and the idea came to my head.while i was working on my electron flow model.i am on a fixed income and live in a condo in ft.myers,fla. and my space is limited to play.thank you for any help or direction you you can give me.
tony gee(eltony2c@aol.com)
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David Macaulay "Generator"
Houghton Mifflin Company, Boston, 1988
Bibliography
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 | A power gererator.
Copyright © EPZ. Permission obtained on 10th of August, by Telephone. |
| A power gererator.
Copyright © EPZ. Permission obtained on 10th of August, by Telephone. |
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