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Thunder is a phenomenon of electrical discharge in the atmosphere, during the formation of thunder, some parts of it accumulate positive charges, and the other part accumulates negative charges, and when these charges accumulate to a certain extent, the discharge phenomenon is produced. Some of these discharges occur between clouds and between clouds and the earth. The latter type of discharge is also a lightning strike, which will damage buildings, electrical equipment, and harm people and animals.
This discharge time is short, usually about 50-100 microseconds, but the current is extremely powerful, reaching tens of thousands of amperes to hundreds of thousands of amperes. When discharged, an intense light is generated, which is called lightning. When lightning, a large amount of heat energy will be released, which can instantly increase the air temperature by 1-20,000 degrees, and the pressure of the air can reach 70 atmospheres.
Key features of Thunderbolt:
1. High inrush current. Its current is as high as tens of thousands to hundreds of thousands of amperes;
2 Short time. Generally, lightning strikes are divided into three stages, namely pilot discharge, main discharge, and afterglow discharge. The whole process generally does not take more than 60 microseconds;
3 High frequency. The lightning current has a large gradient, some of which can reach 10 thousand amperes and microseconds;
4. The impulse voltage is high, and the alternating magnetic field generated by the strong current can induce voltage up to hundreds of millions of volts.
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The base of a thundercloud is mostly negatively charged, and it induces a large amount of positive charge on the ground. In this way, between thunderclouds with a large number of different polarities or different amounts of charges, or between thunderclouds and the earth, a powerful electric field is formed, with potential differences of several megavolts or even tens of megavolts. With the development and motion of thunderclouds, once the intensity of the space electric field exceeds the critical electric field strength of the atmospheric free discharge (about 30 kV cm in the atmosphere and about 10 kV cm in the presence of water droplets), spark discharges will occur between clouds or on the ground. emits tens or even hundreds of kiloamperes; Intense light and heat are generated (discharge channel temperatures up to 15,000 20,000), causing the air to expand and vibrate sharply, resulting in a thunderclap.
200 million = 200 megavolts Such a large potential difference is still relatively rare.
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Voltage and current are physical quantities in point science, and temperature is a physical quantity in thermal. The physical phenomena they describe are different.
Lightning is not a substance in the traditional sense of the word, it has no temperature of its own. It is also impossible to measure its temperature. Only when lightning acts on a substance in the traditional sense will it cause the temperature of the target object to increase.
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The temperature hasn't changed much.
Heating is caused by the acceleration of the molecule velocity because the current is left over the object, but this takes time.
How long is an instant?
Current = Voltage Resistance.
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Is Anilu's ultimate in One Piece?
It's 200 million volts of Thor.
A thunderbird of tens of millions of volts makes twenty sounds (which can also be life) disappear.
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The instantaneous temperature can reach 1-20,000 degrees.
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Produced by thunder and lightning every time there is a thunderstorm.
The self-voltage can be as high as tens of thousands of volts, or even hundreds of thousands of volts. However, the charge of the earth is as high as more than 500,000 coulombs, and the charge contained in the entire surface of the earth is negative, so the lightning is easy to contact the surface of the earth, and a channel current loop is formed between the lightning and the ground, which is extremely current, and the average can reach tens of thousands of amperes. Moreover, the diameter of the channel is very small, only a few square centimeters to tens of square centimeters, so that the temperature of the air column when lightning is as high as more than 20,000 degrees Celsius, so the common lightning color is blazing white.
Basic characteristics of lightning:
The average current of lightning is 30 kA, and the maximum current can reach 300 kA (the maximum amplitude of lightning current observed so far is 430 kA); The voltage of lightning is about 100 million volts to 1 billion volts (the potential difference between the two ends of the lightning channel can reach tens of thousands of volts). Generally, lightning strikes are divided into 3 stages, namely pilot discharge, main discharge, afterglow discharge, lightning current through the metal conductor, when the conductor section is not large enough, it can even be melted, encountering flammable substances, may cause disaster; The heat energy generated by the lightning strike point is enough to melt a steel ball with a diameter of 4 u6 mm, which can break through a steel plate with a thickness of less than 4 mm. Worldwide, the number of lightning strikes per second is about 600.
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Volt is the magnitude of the voltage, the voltage divided by the resistance is the magnitude of the current, then the square of the current is multiplied by the resistance and then multiplied by the time to get the amount of heat released, and then the heat is divided by the specific heat capacity of the object and then divided by the mass to get the temperature of the object.
Taking the human body as an example, the resistance of the human body is at the level of 1,000 ohms, set to 1,000 ohms, and the voltage of 200 million volts produces a current of 200,000 amperes, which radiates heat 4*10 13 joules per second, and the specific heat capacity of the human body is close to that of water, which is set to joules per kilogram per degree Celsius. If the human body is 60kg, then the temperature of the human body is about about 1 degree Celsius.
In other words, 200 million volts can raise the temperature of the human body to more than 100 million degrees in one second.
Of course, these are purely my boring calculations, just estimates and calendars, unprofessional, anyway, the temperature is very high. In addition, a household circuit of 220 volts is enough to electrocute a person.
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How many pounds are you tall?
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The voltage generated by lightning can be as high as tens of thousands of volts, or even hundreds of thousands of volts.
The charge of the earth is as high as more than 500,000 coulombs, and the charge contained in the entire surface of the earth is negative, so the lightning is easy to contact the surface of the earth, and a channel current loop is formed between the lightning and the ground, and the channel current is extremely large, with an average of tens of thousands of amperes.
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The lightning temperature is also high and low, generally a few hundred megavolts of lightning temperature can reach 20,000, which has exceeded the surface temperature of the sun, but still cannot reach the temperature of the outer flame. At present, the maximum temperature of lightning measured is only tens of thousands, and theoretically instantaneous discharges can reach 2 trillion ks (enough to melt atomic nuclei), but such strong discharges do not occur in nature.
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There is no common sense at all.
It's still a few million degrees.
The surface temperature of the sun is only 6000, which is scientific knowledge.
The temperature of lightning is not fixed, but what is lightning?
Lightning is a sound and light phenomenon, why does it make a sound? Because the air vibrates. Why glow? Because the air is scorching.
Generally speaking, it takes more than 1,500 degrees Celsius for the air to be heated to glow (after a match is struck, the glowing air above is heated to more than 2,000 degrees), but it takes at least 10,000 degrees Celsius to emit light like lightning.
It is true that you are not killed by lightning.
Because lightning is only a phenomenon, people die from lightning strikes because a large amount of electric current passes through the body, and a large amount of cell fluid and tissue fluid is ionized, resulting in serious tissue damage and death (so the brain will lose consciousness after being shocked, because nerve cells cannot function normally, and the continuous flow of electricity will burn and burn to death).
Therefore, thunder and lightning split people, not what we imagined, thunder "hit" people.
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