The calculation of the energy of lightning
According to studies, the maximum voltage of a lightning discharge is 50 million volts, and the current can be up to 100 thousand amps. However, the calculation of the energy content of the normal discharge is better to take the average data - difference of potential of 20 million volts and a current of 20 thousand amps.
During a lightning discharge, the potential drops to zero, so to determine the correct power of lightning discharge voltage should be divided by 2. Next you need to multiply the voltage of the electrical power obtained by the average power of lightning discharge, 200 million kilowatts.
It is known that the average discharge lasts about 0.001 second, so the power should be divided by 1000. To get more familiar data, you can divide the result by 3600 (seconds in hour) - get a 55,5 kW.h. It will be interesting to calculate the cost of this energy, at a price of 3 rubles per kW.h. it will be of 166.7 rubles.
Is it possible to tame the lightning?
The average frequency of lightning strikes in Russia - about 2-4 per square kilometer. Given that thunderstorms occur everywhere, for their "trap" will require a large amount of lightning rods. As energy source can only be considered a discharge between the charged cloud and the ground.
For the collection of electricity will also need a high-voltage large capacitors, transformers, stabilizing voltage. Such equipment is quite expensive, and there have been several calculations demonstrating the inefficiency and unprofitability of such method of obtaining energy.
The reason for low efficiency lies primarily in the nature of lightning: when the spark discharge most of the energy is spent on heating of the air and the lightning rod. In addition, the station will operate only in the summer, and even then not every day.
The riddle of ball lightning
Sometimes during a thunderstorm appears unusual ball lightning. It glows brightly or dimly, on average, as a 100-watt bulb and has a yellowish or reddish hue, slow moving, often flies into the room. The size of the sphere or of an ellipse varies from a few centimeters to 2-3 meters, but the average is 15-30 cm
Despite a careful study of this phenomenon, its nature is still not clear. During a thunderstorm, people and objects are charged positively, and the fact that the fireball passes them by, talking about its positive charge. To the negatively charged items she is attracted and may even explode.
Ball lightning appears due to the energy of a conventional zipper, on the spot of its fracture, of a split or at the point of impact. There are two hypotheses of its physical nature: the first is that it gets energy from the outside constantly and due to this it lives for some time. Proponents of the hypothesis believe that the lightning becomes an independent entity after the occurrence and maintains shape due to the resulting from an ordinary lightning energy. To calculate the energy of ball lightning could not be anyone else.