Tổng quan về sét

1. Sét được hình thành thế nào?

 
ightning basics 1. How does lightning happen?

When there are updrafts in the sky, pellets of hail and graupel in the clouds interact with each other in the clouds, causing a positive charge to accumulate at the top of the cloud, and a negative charge at the bottom.

 

As the cloud grows, the electrical charge increases and it becomes impossible for each charge to exist in its present state. Reaction between the positive and negative charges creates an electrical discharge (short) in the air. This is lightning. This discharge that occurs within a cloud is “cloud to cloud lightning”, and that which occurs between the clouds and the ground is “cloud to ground lightning”. When lightning occurs, there is a momentary discharge of energy, accompanied by an intense flash of light (lightning) and sound (thunder).

 
 

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