Lightning is one of the most beautiful natural phenomena. Simultaneously frightening and awe-inspiring. About 50 times a second in the world there is a lightning strike (more than 4 million times a day). Lightning is a giant electric spark in the atmosphere may typically occur during a lightning storm, manifesting a bright flash of light and its accompanying thunder. The current in the lightning discharge reaches 10-300 thousand amperes, the voltage from tens of millions to a billion volts.
Lightning is an electrical explosion, and in some aspects similar to the detonation of the explosive. It causes a shock wave, the danger in the immediate vicinity. The shock wave from a sufficiently powerful lightning at distances up to several meters can inflict destruction, breaking trees, injure and bruise people even without direct electrical shock. flickr/Steven Grover
Sometimes Lightning strike becomes an serious threat to human life. The defeat of the human or animal body by lightning often occur in open spaces, as the electric current goes along the shortest path "storm cloud-to-ground." Most lightning strikes in the trees and transformer installation on the rail, causing them to catch fire. Lightning is also a very big threat to surface ships in view of the fact that the latter are raised above the surface of the sea and have a lot of sharp elements (masts, antenna), which are hubs of the electric field. In the days of wooden sailing ships with high resistivity body, lightning almost always ended tragically for the ship: the ship burned or destroyed, electric shock killed people.
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