8. Blue Streamers: The Building Blocks of Lightning
Blue streamers are a basic component of many blue lightning episodes rather than a separate kind of lightning phenomena. Initially, these tiny, ionised channels of air create the paths for electrical discharges in the environment. Regarding blue lightning, these streamers can show up as weak, branching blue light tendrils.
These streamers’ blue hue results from the high electric fields found in thunderstorms ionising nitrogen molecules. Electrons removed from nitrogen atoms emit blue light when they recombine. Many lightning events can be seen with the distinct blue glow produced by this process.
Comprehending the greater-scale blue lightning episodes requires an awareness of the creation and behaviour of blue streamers. The more spectacular shows of blue jets, sprites, and other events that inspire our imagination are derived from these little mechanisms.