Comments: 1

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DaveSFV Said in Friday, January 16, 2009

Lightning is a discharge of electricity through a very poor conductor (air). The resistive effect of this poor conductor causes heat. It is the same as how a coil in an electric heater works. The coil is resistive to the electricity and produces heat. The filament in a light bulb is resistive and produces light as well as heat. The power comes from the tremendous amount of charged (negative to positive) particles being conducted through this electrical path.