Tia sét khổng lồ phóng ngược
hững tia sét thường giáng xuống đất trong các cơn bão, nhưng mới đây các nhà khoa học đã chụp được hình ảnh một tia sét cực lớn hướng theo chiều ngược lại.Sét hướng lên phía trên là một dạng phóng điện hiếm trong các cơn bão. Ảnh: universalgeneral.com.Những tia sét hướng lên phía trên - một trong những dạng phóng điện khá hiếm hoi trong các cơn bão. Dạng sét này được phát hiện lần đầu tiên vào năm 2001. Kể từ đó tới nay người ta đã quan sát 10 tia sét tương tự.
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