> Lightning Phenomenon Thunder cloud : The cumulonimbus thunder cloud is the main source of lightning. Its upper part is made up of positively charged ice crystals, and its lower part of negatively charged ...                                                                                      See more Discharge Phenomenon : From the base of a cloud, usually negatively charged, a pre-discharge known as a stepped leader  escapes. This stepped leader  is barely luminous and its progression towards...                                                                                                                                                            See more Choice of impact point Far away in the sky, the earth is seen as being perfectly flat by the downward stepped leader. As it approaches the ground, the average electric field increases. When it is sufficiently close to the ground (100 ...                                                                                     See more ese conductor lightning protection storm tracer ionization surge arrester volt Contact us