A Complete Collection of 100000 Whys
Fav十万个为什么
为什么闪电会发出亮光？
1、闪电是大气中电荷快速移动产生的放电现象，当正负电荷之间的电势差足够大时，会形成强烈的电流。
2、电流在空气中快速移动时，会加热周围的空气，使空气温度瞬间升高到数万摄氏度，高温空气迅速膨胀并发出强光。
3、闪电的亮光主要由空气中的氮气和氧气在高温下电离和激发产生，这些被激发的气体在回到基态时会释放出光子。
4、闪电的光谱非常宽，包含可见光和紫外线，因此我们看到的闪电是白色的，这是因为白光是由多种颜色的光混合而成的。
5、闪电的亮度极高，其亮度甚至超过太阳，这是因为闪电的电流强度极大，能量释放非常迅速。
总之，闪电发出亮光是由于大气中电荷快速移动产生的高温高压使空气电离和激发，从而释放出大量光能。
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