A lightning is an electric discharge that hits the earth, coming of the polarization that is produced among the molecules of water of a cloud (the positive burdens are usually located in the high part of the cloud and the negatives in the low part), the negative burdens of which are attracted by the positive burden of the earth|land, provoking itself a massive step of millions of electrons in this last. This discharge can travel until 13 kilometers, to provoke a temperature of 50.000 °F (some 28.000°C that is three times the temperature of the Sun), an electrical potential of more than 100 million volts and an intensity of 20.000 amperes.
The speed of a lightning can arrive at the 140.000 km for second.
In the point of entry on the earth, the lightning can destroy a radium of 20 meters, of agreement in its power and in the characteristics of the floor.
This polarization of the electrical loads of a cloud is the one that is denominated electrostatics, phenomenon, that is in our daily life present. Even us can accumulate electroestàtica and, for example in corresponding to another person, unload it like a spark of current that produces us a certain scare. The clouds create this giant spark at scale. The thunder is not any other thing than the shock wave provoked by this tremendous freed energy, originating the characteristic noise that we can listen to.
Detection of lightnings thanks to AEmeT . This graph presents the detected lightnings in the region during a period of 6 hours. The lightnings fallen down on the territory of France nor of Portugal are not represented in the map, although yes that they count themselves in the legend that appears at the foot of the same one.
The position of each detected lightning comes represented for a point (negative discharges) or a positive sign. The color indicates the hour of each jet: red the most recent and blue dark the most ancient.
Detection of lightnings thanks to SMC. In this page the lightnings observed by the Net of Detection of Electric Discharges (XDDE) of the SMC can be consulted. Two images, with the lightnings of the day of today and that of yesterday, are presented the first updating every 10 minutes. The symbol of the lightning corresponds to its polarity, there being lightnings of negative burden|load (-) and of positive burden (+). The color of the symbols indicates the hourly stretch that the lightning corresponds to. The hour of updating and that of the stretches of the legend they are expressed in Universal Weather (T.U.). It is necessary to add up an hour in schedule of winter and two in hourly of summer to pass to the official time. Text of SMC
Going Going to it paginates it|her original that the lightnings of the day can be seen of yesterday.
