how lightning occurs between two clouds during a storm?


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Lightning is an electrical discharge produced to balance the differences between positive and negative charges within a cloud, between two clouds, or between the cloud and the ground.

You've heard the expression, "opposites attract." Well, this is exactly what happens with cloud-to-ground lightning.

A negative charge at the base of the cloud is attracted to a positive charge at the earth's surface. This charge is densest on isolated or protruding objects, like trees and tall buildings. When the difference between these charges becomes sufficiently strong, the normal insulating qualities of the air break down and a lightning bolt strikes.

What occurs as an instantaneous flash to the human observer actually is a complex progression of events. First, a usually invisible discharge of electrons races down from the cloud. This downward moving bolt of negatively charged electricity (called a stepped leader) incites a discharge of positively charged electricity from the ground.

 

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Lightning is a massive electrostatic discharge caused by unbalanced electric charge in the atmosphere, either inside clouds, cloud to cloud or cloud to ground, accompanied by the loud sound of thunder.
When the local electric field exceeds the dielectric strength of damp air (about 3 million Volts/m), electrical discharge results, often followed by more discharges along the same path. Mechanisms that cause lightning are still a matter of scientific investigation.A typical cloud to ground lightning strike can be over 5 km (3 mi) long.[1] A typical thunderstorm may have three or more strikes per minute at its peak.[2] Lightning is usually produced by cumulonimbus clouds up to 15 km high (10 mi) high, based 5–6 km (3-4 mi) above the ground. Lightning is caused by the circulation of warm moisture-filled air through electric fields.[3] Ice or water particles then accumulate charge as in a Van de Graaff generator.[4] Lightning may occur during snow storms(thundersnow), volcanic eruptionsdust stormsforest fires or tornadoes.[5][6]Hurricanes typically generate some lightning, mainly in the rainbands as much as 160 km (100 mi) from the center

Fear of lightning is called astraphobia.

 

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 Clouds are of two types one- positively charged cloud and second- negatively charged cloud. You know that opposite charge attract each other so lightning occurs in clouds during storm.

And also rapid flow of charge through the air between two oppositely charged  clouds is called lightning.

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During rainy season or storm period when two clouds collide to each other fiction occur between them due to friction the upper part of the cloud gets positive charge and lower part of cloud get negative charge and due to the transfer of charge lightning occurs in nature
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