Positivity

Description from the Discovery Channel website: Positive lightning happens because of that positive charge that builds up at the top of the cloud. Because an or...
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Description from the Discovery Channel website: Positive lightning happens because of that positive charge that builds up at the top of the cloud. Because an ordinary storm cloud keeps negatively charged particles between the positively charged particles and the ground, positive lightning doesn't usually happen unless there's a strong wind to move the negative charge out of the way, or once most of the storm has cleared. In this case, the electrons have a much greater distance to travel. When they do, watch out! A negative bolt produces about 300 million volts and 30,000 amps of electricity — a positive one produces about a billion volts and 300,000 amps.
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