Photogallery of lighting ball formed by porous silicon explosion and combustion processes.
Photos of lightning ball produced by porous silicon explosion processes. The ball lightning divides into balls of different size before disappearance.
Photos of lightning ball with dividing into two balls. The smaller ball disappears first and then the bigger one do. Such behavior of ball lightning have been mentioned in eye-witness recollections.
Ball lightning size can reach half-meter diameter. It corresponds to maximum ball lightning diameter according to eye-witness recollection.
Before porous silicon explosion.
After porous silicon explosion.
Lightning ball can have a crown. It was mentioned in eye-witness recollections.
Flash color of porous silicon explosion can be blue (1), yellow (2), white (3), white-red (4), covering the whole visible range.
Contact ball lightning leaves no burn or damages in case of direct contact with the hand.