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Tordenskyers lyn varsles af op til ca. 40 sekunders retningsbestemt
gammastråler:

Sep 11, 2007, Thundercloud "accelerator" fires gamma-ray beam:
http://physicsworld.com/cws/article/news/31092
Citat: "...
Tsuchiya says that bremsstrahlung at MeV energies would be focused into
a beam that only illuminates a small area on the ground
....
According to Smith, the millions of volts required to produce MeV
electrons could be sustained in a cloud for seconds or even minutes as
long as the stream of electrons does not become so intense that it
causes an avalanche-like electric breakdown of the type that could lead
to lightning.
...."

Hvordan mon planter reagerer på sådan en dosis gammastråler fra naturens
megaelektronaccelerator?

hilsen

Glenn