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How thunderstorms are formed
Thunderbolt is an extremely magnificent natural phenomenon. It is an ancient and mysterious science. Lightning has nurtured the life of the earth and has contributed to the civilization on the earth. However, the tremendous destructive power of thunder and lightning has brought a catastrophe to human society. The struggle between humans and nature has never stopped, and the fight against thunder and lightning is fruitful. With the development of society and advancement in science and technology, lightning protection technology has made rapid progress.
Thunder is one of the weather phenomena. During the formation of thunderclouds, some cloud clusters have positive electricity and others have negative charges. Their electrostatic induction to the earth creates an opposite charge on the ground. When these cloud charges accumulate to a certain degree, the electric field strength between different charge clouds or between clouds and the earth can break through the air (a
Generally 25-30 kV/cm) start free discharge. We call this free discharge a “pilot discharge,†and the cloud discharge of the clouds in the earth’s lead is a gradual progression of the cloud’s jump to the ground (running), when it reaches the ground (buildings above the ground, overhead transmission lines, etc.) ), will produce the reverse main discharge from the ground to the cloud.
In the main discharge phase, due to the violent neutralization of the opposite charge, a large current (usually several tens of thousands of amps to several hundred amps) occurs, followed by a strong discharge flash, which is lightning; a powerful current to the lightning The air in the passageway was heated to over 10,000 degrees, causing the air to expand suddenly and make a loud noise. This is thunder, which formed lightning.