Lightning - LIGHTNING ARFA AEZAD BSMC 2K10 13TH May 2011...

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LIGHTNING ARFA AEZAD BSMC 2K10 13TH May 2011
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HOW LIGHTNING OCCUR? To put it simply, lightning is electricity. It forms in the strong up-and-down air currents inside tall dark cumulonimbus clouds as water droplets, hail, and ice crystals collide with one another. Scientists believe that these collisions build up charges of electricity in a cloud. The positive and negative electrical charges in
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In typical lightning these are down-flowing negative charges, and when the positive charges on the ground leap upward to meet them, the jagged downward path of the negative charges suddenly lights up with a brilliant flash of light. Because of this, our eyes fool us into thinking that the lightning bolt shoots down from the cloud, when in fact the lightning travels up from the ground. The whole process takes less than a millionth of a second.
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KINDS OF LIGHTNING In-Cloud Lightning: The most common type, it travels between positive and negative charge centers within the thunderstorm. Cloud-to-Ground Lightning:
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Lightning - LIGHTNING ARFA AEZAD BSMC 2K10 13TH May 2011...

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