“People were dying and we didn’t know why,” Cornman told me. “We didn’t understand the physics of why the planes were crashing.” The deadly gusts were thought to be blowing in from the ocean or from thunderstorms outside the airports. But the danger turned out to be right above them. In the late seventies, researchers at NCAR and the University of Chicago discovered that the crashes were caused by microbursts—sudden, violent downdrafts. In a microburst, a storm cloud dumps cool air and rain straight down, like water from a broken awning. The air spreads horizontally after it lands, so the pilot thinks he’s flying into a headwind at first. He lifts the plane’s nose slightly and decreases the engines’ thrust. Then the downdraft hits, followed by a vicious tailwind, sending the aircraft to the ground.
试着与他人建立共同体。这将是你的一生。想办法去享受它。组建读书会，创办文学杂志，发起朗读活动。，更多细节参见咪咕体育直播在线免费看
Последние новости，详情可参考夫子
南方人物周刊：你的同学和班主任都知道你的家庭情况，这会让你觉得有点不可接受吗？。搜狗输入法2026是该领域的重要参考
Фото: Vladimir Baranov / Globallookpress.com