Cause of Lightning - Understand How It Happens

In summary, lightning is caused by a large potential difference between clouds and the earth. This difference is created by the rubbing of clouds, resulting in a strong electric field that ionizes the air particles between the clouds and the earth. This ionization creates a conducting layer, allowing for the transmission of a significant amount of current, which produces thermal radiation in the visible region. While some theories suggest that the static charge created by friction from clouds is the main cause of lightning, others propose that ice may also play a role in creating a separation of charges.
  • #1
AlchemistK
158
0
Lightning is quite a common phenomena and yet i don't have a clear understanding of how it is caused.
Can someone tell me the real cause of lightning?
 
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  • #2
Actually lightning is created due to huge potential difference created between cloud and earth.Clouds due to rubbing with each other create huge amount static charge which has very high potential with respect to earth.Now, the electric field thus created is very strong resulting in ionisation of air particles in between cloud and earth.These ionised air particles(also called plasma)acts as a conducting layer and transmits huge amount of current creating thermal radiations lying in visible region.
 
  • #3
But isn't static charge created by friction from clouds just one of the theories?
I have read others which include ice which causes forced separation of charges.
 

What is lightning and how does it form?

Lightning is a natural electrical discharge that occurs during a thunderstorm. It is caused by the buildup of static electricity in the atmosphere, which is released in the form of a bolt of lightning. As the storm clouds move and collide, the friction between them creates an imbalance of positive and negative charges, resulting in lightning.

What are the main factors that determine where and when lightning will strike?

The main factors that determine where and when lightning will strike include the presence of storm clouds, the strength and distribution of electrical charges within the clouds, and the presence of tall objects on the ground that can act as lightning rods. The topography and geography of an area can also play a role in determining the frequency and intensity of lightning strikes.

What are the different types of lightning?

There are several types of lightning, including cloud-to-ground, intra-cloud, and cloud-to-cloud. Cloud-to-ground lightning is the most well-known and occurs when a bolt of electricity travels from the storm cloud to the ground. Intra-cloud lightning occurs within the cloud itself, and cloud-to-cloud lightning occurs between two separate storm clouds.

Can lightning be dangerous to humans?

Yes, lightning can be very dangerous to humans. On average, lightning kills about 49 people each year in the United States alone. It can also cause serious injuries, such as burns, cardiac arrest, and neurological damage. It is important to seek shelter during a thunderstorm and avoid tall objects, open spaces, and bodies of water to reduce the risk of being struck by lightning.

What precautions can be taken to prevent lightning strikes?

To prevent lightning strikes, it is important to stay indoors during a thunderstorm and avoid using electronic devices or plumbing, as they can conduct electricity. If you are caught outdoors during a thunderstorm, seek shelter in a sturdy building or a fully enclosed metal vehicle. Avoid standing under tall objects, such as trees or light poles, and stay away from bodies of water. If you are in an open area, crouch down on the balls of your feet, with your feet together and your hands covering your ears to reduce the risk of a direct strike.

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