Terrestrial gamma-ray flash
Burst of gamma rays produced in the Earth's atmosphere / From Wikipedia, the free encyclopedia
Dear Wikiwand AI, let's keep it short by simply answering these key questions:
Can you list the top facts and stats about Terrestrial gamma-ray flash?
Summarize this article for a 10 year old
SHOW ALL QUESTIONS
For gamma-ray bursts of cosmic origin, see Gamma-ray burst.
A terrestrial gamma-ray flash (TGF), also known as dark lightning, is a burst of gamma rays produced in Earth's atmosphere. TGFs have been recorded to last 0.2 to 3.5 milliseconds, and have energies of up to 20 million electronvolts. It is speculated that TGFs are caused by intense electric fields produced above or inside thunderstorms. Scientists have also detected energetic positrons and electrons produced by terrestrial gamma-ray flashes.[1][2]