Science Station  Now Open on Level 4       Volcanic lightning is
a phenomenon that happens within a volcano. There are three
different types of lightning discharge in a volcano; dirty
lightning, small sparks, and vent lightning. Dirty lightning
resembles normal lightning and can be seen from far away. Small
sparks can only be seen close up. The third kind is vent
lightning; this discharge comes directly from the volcano mouth
and is approximately two miles long.   According to Bradley
Muller, a professor of Applied Meteorology in the Department of
Applied Aviation Sciences at Embry-Riddle Aeronautical ,
volcanic lightning is believed to be caused by a separation of
charges. When one particle with negative charge is separated
from the positive charged particle, lightning could develop
between those two particles. This is the effect that causes
lightning to form within a volcano. These charges develop when
different materials rub or collide together; the friction
between materials causes the charge itself. The