History And Development Of Electricity

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Some of the effects of electricity may be seen in nature. For example, lightning is a huge flash of light caused by electricity.
Any particular electron does not move from one end of a conductor to the other. The movement of electrons may be compared to a shunting train engine bumping or standing a railway track. When the engine bumps one end of the spring, each truck progressively bumps the next. The movement of electrons in a metallic conductor creates an electric current. Some materials are better conductors than others are. Good conductors have a free electron orbiting the others. Free electrons link up with others to create a flow.
If one or more electrons has been removed, the remaining positively charged structure is called a positive ion. A negative ion is an atom that has gained one or more extra electron.
The first test of electricity was during a thunderstorm in 1752 when Franklin flew a kite that had a metal tip. The experiment was extremely hazardous but th...