闪电是自然界中一种强烈的放电现象，是空气中正负离子碰撞的产物．通常情况下，闪电有许多种形状，最常见的是树枝状的．在众多种形状中，最罕见、也最神秘的莫过于球状闪电了．球状闪电，顾名思义，就是说它的形状像个球，但是并不大，只有几十厘米，它可以随风飘动，一边移 Lightning is a kind of intense discharge phenomenon in nature, and it is the product of collision of positive and negative ions in the air. In general, lightning has many shapes, the most common being dendritic. Among the many kinds of shapes, the rarest and most mysterious is the ball lightning. Ball lightning, as its name suggests, means that it is shaped like a ball, but it is not large. It is only a few tens of centimeters. It can move with the wind and move sideways.