中文翻譯:
你有沒有在雷電交加的暴風雨中感到驚奇呢?你並不孤單。科學家們仍在研究雷電是怎麼形成的,但已經知道在一些雲層內部,内部的上升氣流會導致冰和雪之間的碰撞,這些碰撞會將雲的上部和下部的電荷慢慢隔離。隨後,快速的電流放電就形成了雷電。雷電通常是呈鋸齒狀的,會迅速加熱一小段空氣,溫度大約是太陽表面溫度的三倍。產生的震波最初速度極快,然後變成我們所聽到的雷聲。全球平均每分鐘大約有6000次雷電發生在雲和地球之間。在2019年7月拍攝的這幅雙圖合成圖片中,雷電來自於位於瓜地馬拉(Guatemala)水火山(Volcán de Agua)頂部的通信天線。
原文:
Have you ever watched a lightning storm in awe? You’re not alone. Details of what causes lightning are still being researched, but it is known that inside some clouds, internal updrafts cause collisions between ice and snow that slowly separate charges between cloud tops and bottoms. The rapid electrical discharges that are lightning soon result. Lightning usually takes a jagged course, rapidly heating a thin column of air to about three times the surface temperature of the Sun. The resulting shock wave starts supersonically and decays into the loud sound known as thunder. On average, around the world, about 6,000 lightning bolts occur between clouds and the Earth every minute. Pictured in July 2019 in a two-image composite, lightning stems from communication antennas near the top of Volcán de Agua (Volcano of Water) in Guatemala. Sky Surprise: What picture did APOD feature on your birthday? (post 1995)
來源:NASA每日圖片