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Question:

What is a lightning rod for?

What is a lightning rod for?

Answer:

Let me explain the lightning principle first. Due to the internal cause of the clouds above negatively charged with the following order, the following on appeal to the ground, the surface is negatively charged, out of the ground object is more serious, so there will be air to ground discharge (thunder).
The lightning rod is the use of the principle of point discharge, so that the ground surface with the electricity in the air in time, so that the voltage difference between the ground clouds will be reduced, to achieve the effect of lightning protection.
Thunder cloud and cloud, cloud and cloud or with the air discharge, fast heat on its path to the air, water vaporizes quickly, greatly increased volume and a strong explosion.The lightning rod was invented by Franklin. In order to study the thunder and lightning, he used the kite to bring the lightning to the ground in rainy days.A lightning rod is a device for preventing buildings from being struck by lightning. A metal bar is placed at the top of the tall building, joined with a metal wire buried in the ground with metal wire, and uses the discharge of the top of the metal bar to neutralize the electricity and the electricity from the clouds.
In order to prevent all kinds of objects near the ground from being struck by lightning, the lightning rod can be used to lead the lightning safely into the earth, so as to avoid the occurrence of lightning stroke.

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