Classification of lightning colors.
Lightning is very powerful. It ionizes air and produces different wavelengths. High energy is purple light, and vice versa. The colors of lightning are white, red and green. Like the formation principle of rainbow, the light emitted by lightning is also seven-color light. Because the water vapor in the clouds is heavy, it causes refraction, so that color can be seen when lightning strikes.
Extended data
Storm clouds (cumulonimbus clouds) will generate charges, with negative charges at the bottom and positive charges at the top, and positive charges will also be generated on the ground, which will follow the clouds. Positive and negative charges attract each other, but air is not a good conductor.
Positive charges rush to tree tops, hills, tall buildings and even human bodies in an attempt to meet negatively charged clouds; The negatively charged dendritic antenna extends downward, and the farther it extends, the closer it is to the ground. Finally, the positive and negative charges finally overcome the air barrier and connect. A huge current rushed from the ground to the clouds along the conductive path, producing a bright flash.
Baidu Encyclopedia-Color Lightning