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夏天,雷电是一种常见的自然现象。闪电是云层之间、云地之间、云与空气之间的电位差增大到一定程度后的放电现象。闪电过处,空气中的小水滴因高温(闪电时产生的温度瞬间达6,000—30,000℃)而汽化,空气体积迅速膨胀,结果就产生了一种震耳欲聋的爆炸声——即通常所听到的雷声。据统计,地球上每天要受到大约46,000多次的雷电冲击。雷电可以将周围空气剧烈压缩,发生物理性爆炸效应,产生极大的超压和动压,使被击中的房屋、仓库、水坝、古塔及工厂高大烟囱倒塌,树木劈裂,森林失火,
In summer, lightning is a common natural phenomenon. Lightning is the cloud between the clouds, between the cloud and the air potential difference increases to a certain extent after the discharge phenomenon. When the lightning strikes, the small droplets of water in the air vaporize due to the high temperatures (temperatures of 6,000 to 30,000 degrees Celsius during lightning), and the volume of air rapidly expands, resulting in a deafening explosion - commonly heard thunder. According to statistics, there are about 46,000 lightning strikes on Earth every day. The thunder and lightning can compress the surrounding air drastically and produce a physical explosion effect, resulting in great overpressure and dynamic pressure, causing collapsed houses, warehouses, dams, ancient towers and factory chimneys, tree splitting, forest fires,