Explanation Text | Lightning
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Lightning
Lightning is a natural phenomenon that usually appears in the rainy season when the sky gives a brief flash of light. A few moments later followed by a thunderous sound called thunder. The difference in time of appearance is due to the difference between the speed of sound and the speed of light.
Lightning occurs because there are potential differences between clouds and earth or with other clouds. The process of the charge on the cloud because he moves continuously regularly, and during his movement he will interact with other clouds so that negative charges will gather on one side (up or down), while positive charges gather on the opposite side.
If the potential difference between the cloud and the earth is large enough, there will be a discharge of negative charges (electrons) from the cloud to the earth or vice versa to achieve equilibrium. In the process of removing this charge, the media through which electrons are air. At the moment the electrons are able to penetrate the threshold of air isolation this is a sound explosion.
Lightning is more common in the rainy season, because in these circumstances the air contains higher water content so that the insulation power falls and the current flows more easily. Because there are negative clouds and positively charged clouds, lightning can also occur between clouds of different charge.
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