Credits
http://www.strikingimages.com
Jack Corso, Thunderhead International
http://www.kcstorm.org/storms.htm
http://www.srh.noaa.gov/mlb/ltgcenter/whatis.html
Rakov, V.A. and Uman, M.A. "Lightning: Physics and Effects."
Cambridge University Press , 2001.
Uman, M.A. "The Lightning Discharge."
Academic Press, 1987, 2000.
