
Lightning Bolt

by Kent Wood
Title
Lightning Bolt
Artist
Kent Wood
Medium
Photograph - Photograph
Description
Lightning. Branching lightning bolt at night over a city. Lightning occurs when a large electrical charge builds up in a cloud; a potential difference of 10,000 volts a centimeter is needed for electrical discharge through air. At first, leaders of electrons descend towards the ground. As soon as one makes contact an enormous return stroke surges up the leader's ionized path, producing blinding white light and temperatures as high as 30,000 degrees Celsius. The other leaders also discharge themselves through the one that made contact with the ground, producing the branching effect seen here. Photographed on a summer night over Tucson in Arizona, USA.
Uploaded
September 29th, 2015
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