This is interesting to study, how a twister builds up and
gets stronger:
http://video.google.com/videoplay?docid=311122590669917069
http://video.google.com/videoplay?docid=-518685325821874402
Pretty strong energies involved which cool down the air and
gain mechanical energy from it to , so there might be a second law violation
occuring here.
http://video.google.com/videoplay?docid=5218400240259254944&q=label%3Atornado
tornado-bilder
http://video.google.com/videoplay?docid=7152309012698642829
tornado simuliert