Saturday, December 10, 2011

Electricity

Electricity is a general term encompassing a variety of phenomena resulting from the presence and flow of electric charge. These include many easily recognizable phenomena, such as lightning, static electricity, and the flow of electrical current in an electrical wire. In addition, electricity encompasses less familiar concepts such as the electromagnetic field and electromagnetic induction.

The word is from the New Latin Ä“lectricus, "amber-like"[a], coined in the year 1600 from the Greek electron meaning amber (hardened plant resin), because electrical effects were produced classically by rubbing amber.

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