At July 14, 2008 at 10:00 PM, Anonymous said…
The ionisation due to cosmic rays from outer world.The heavy positive ions falls to earth.
At July 29, 2008 at 11:39 AM, Anonymous said…
in coment you have given only-ve charge to clouds,then how thunder stroms are taking place in sky with out +ve charge?
At September 17, 2008 at 10:12 PM, Anonymous said…
is it can be due to electric polarization ?
The ionisation due to cosmic rays from outer world.
The heavy positive ions falls to earth.