Why are people struck by lightning?

In my impression, a group of cursed or cursed people will be struck by lightning. Because the older generation will say that only bad things or unfilial behaviors will be struck by lightning. Now it seems that this is not the case.

Although being struck by lightning is a small probability event, according to the statistics of the National Weather Service (NWS), the probability of being struck by lightning in a person's life is about 13500+0. From 200 1 to 20 10, more than 400 people in the United States are struck by lightning every year.

We can't help asking why someone was struck by lightning. Let's talk about what lightning strikes are first.

Lightning is a discharge phenomenon accompanied by lightning. Lightning is usually produced in cumulonimbus clouds with strong convection, so it is often accompanied by strong gusts and heavy rains, and sometimes accompanied by hail and tornadoes.

The upper part of the cloud is dominated by positive charges and the lower part is dominated by negative charges. A potential difference is formed between the upper and lower parts of the cloud. When the potential difference reaches a certain level, discharge will occur, which is our common lightning phenomenon. The average current of lightning is 30,000 amps, and the maximum current can reach 300,000 amps. The voltage of lightning is very high, about 1 100 million to 1 100 million volts, and the power of a moderate-intensity thunderstorm can reach10 million watts. Lightning can be divided into four types: direct lightning, electromagnetic pulse, spherical lightning and cloud flash. Both direct lightning and combined lightning will do harm to people and buildings, and direct lightning is the strongest lightning.

Lightning strike itself is a kind of discharge phenomenon, and the fundamental cause of harm to human body is that there is current passing through human body, and the current and voltage of lightning are much larger than that of ordinary electric shock. Although it takes a very short time to pass through the human body, it can also cause various injuries.

Since thunder is a discharge phenomenon between clouds and between clouds and the ground, why are some people, animals and even some objects struck by lightning?

As mentioned earlier, the cloud cluster process with positive and negative charges is the neutralization of positive and negative charges, and this neutralization process will be accompanied by the release of huge energy. But to promote this energy release, there must be a medium between positive and negative electricity, that is, a conductor.

At this time, if someone is unconsciously caught between positive and negative ions and becomes a bridge for them to release each other, they can only sacrifice themselves.

However, lightning needs a lot of energy to penetrate the air. If there are high-rise buildings or trees as the medium, lightning is easier to release. Therefore, in thunderstorm days, mountains or tall buildings and trees are more likely to become the connection points of clouds and earth discharge, which is also the reason why people are required not to go to the mountains or under eaves or trees to shelter from the rain in thunderstorm days.

In the open Yuan Ye, a standing person can easily become the connection point of lightning. That's why some people get struck by lightning outdoors for no reason.

What does it feel like to be struck by lightning? I guess I will never forget it in my life.

Everything will be lucky. An American businessman survived seven lightning strikes in his life. Once, his shoes were burnt and his toes were burned, leaving a scar 15 cm long on his right leg. It is estimated that it will be very painful at that time.

Some hair will stand up before lightning strikes. This is because before lightning strikes, a large amount of charge accumulates around the victim, just like a plastic stick sucking up a piece of paper. At this point, you should quickly draw away the charge to prevent excessive charge from accumulating and discharging in your body.

Of course, people who are struck by lightning will also have amnesia, unstable walking, convulsions and other symptoms, which are related to the damage of lightning to the nervous system.

So, how to prevent being struck by lightning outdoors? You can do the following.

(1) Pay attention to the weather forecast. Needless to say, if you don't even watch the weather forecast, thunder won't hit you.

(2) stay away from the tower. Like chimneys and flagpoles, if possible, you should enter cars and ships with wide metal frames and lightning protection facilities or metal shells, but canvas trucks, tractors and motorcycles are more dangerous when struck by lightning and should leave as soon as possible.

(3) Try to stay away from hills, coasts, rivers and pools; Leave the barbed wire and metal clothesline as soon as possible. Isolated trees and small buildings without lightning protection devices.

(4) Try not to walk in the wild in thunderstorm weather. In case of emergency, you can wear waterproof raincoats such as plastic; Walk slowly, with smaller steps; Don't ride livestock or walk by bike; Don't use umbrellas with metal poles, and don't carry tools with metal poles such as shovels and hoes on your shoulders.

Before being struck by lightning, people will suddenly feel their hair stand on end or their skin tremble. At this time, they should lie flat on the ground immediately, or choose to squat down in a low-lying place, with their feet together, their arms crossed and their heads down to minimize exposure.