What is the reason for the low number of lightning accidents in our country?

This is because many buildings in our country are equipped with lightning rods, and household appliances are basically grounded, I hope mine is useful to you.

Lightning strikes refer to the death or damage caused by electric current passing through people, animals, trees, buildings, etc. during lightning. The discharge between the clouds is harmful to the aircraft and has little impact on the buildings, people and animals on the ground, but the discharge of the clouds to the earth is very harmful to buildings, electronic and electrical equipment and people and animals. Once it causes harm to all things, it can be called being struck by lightning.

At present, many equipment and facilities, such as buildings, signal towers, etc., are equipped with lightning protection facilities.

The friction and decomposition of air currents in thunderstorm clouds produce static electricity, which is either positive electricity with positively charged particles and negatively charged particles. The positive charge is at the upper end of the cloud, and the negative charge attracts the positive charge on the ground at the lower end of the cloud. So thunder and lightning will form.

Places with abundant coal resources and mine resources are susceptible to lightning strikes, forming minefields.

1.Lightning:

When the charges in the thundercloud and the charges on the ground are strengthened at the same time, these charges will break through the barriers of the air and come into contact to form a strong current, and the positive and negative charges will contact the atmosphere at the same time, forming lightning. When these opposite-sex charges meet, a neutralizing effect (discharge) occurs. Intense charge neutralization emits a large amount of light and heat, and these emitted light forms lightning.

Most lightning bolts are connected twice.

When a strong electric current passes through the air, it causes the air along the way to expand suddenly, and at the same time pushes the surrounding air, causing the air to vibrate violently, and the sound produced at this time is thunder. Thunder and lightning are the phenomenon of electrical discharge in thunderstorm clouds. If lightning falls far away, we hear the rumbling of thunder.

This is because of the echoes emitted by sound waves when they are refracted by the atmosphere and reflected by objects on the ground.

3.The principle of lightning:

It is a principle that lightning during the thunderstorm season ionizes and conducts electricity through the ionization of insulating materials in high-voltage electric fields. During thunderstorms, the intensity of the high-voltage electric field formed by the charged clouds is very high. In general, this is generally the case when charged clouds discharge to the earth, where the clouds are high potential in the positive charge region and the earth is low in the negative charge region.

Air is originally non-conductive, but under the action of a strong electric field force, the outermost electrons of the gas nucleus will be excited by the electric field force to produce a transition and form charged ions.

In China, thunderstorms mostly occur in the weather with high temperature and humidity in May and August. In spring and autumn, it mainly occurs in the south of the Yangtze River, with the least in winter, and after October, there will be no thundershowers in the vast areas north of the Yangtze River. In terms of the time of day, it mostly occurs in the afternoon and evening.

Thunder is a common natural phenomenon, is the process of discharging together with the positive electric cloud and the negative electric cloud with water vapor in the sky, frequent lightning strikes are closely related to the geographical location, the area south of Guangdong Province is relatively low in the atmosphere, and the lightning natural disasters in Shenzhen and Huizhou have reached the world's highest.

Thunder is caused by the updrafts turning into ice particles when they are cold at high altitude, and the positively and negatively charged ice particles collide with each other. Under trees, towers, lakes, and at the foot of mountains, lightning strikes are frequent.

In layman's terms, some clouds are positively charged, and some clouds are loaded. When the cloud moves, the positive and negative charges collide together, and the huge friction creates a high temperature, which leads to **. High places, under trees, and in California are often struck by lightning.

When the air currents are constantly rubbing and decomposing in the dark clouds, static electricity is generated. There are two types of electricity, one is positive electricity with a positive charge and the other is a negative charge with a negative charge, and these electricity forms thunder. In places with a lot of coal or mines, it is very easy to be struck by lightning.

The condition for the generation of thunder and lightning is that there is an accumulation of polarity in the thunderstorm clouds, which produces thunder and lightning, and places with abundant coal resources and mine resources are easy to be struck by lightning, forming a minefield. Minefields are susceptible to lightning strikes.

The air flow in thunderstorm clouds will produce static electricity due to friction, the positive charge in the static electricity is at the upper end of the cloud, and the negative charge is at the lower end of the cloud, which will attract the positive charge on the ground, so thunder and lightning are formed.

In places with abundant coal resources and mine resources, it is easy to be struck by lightning.

There are two reasons for this: on the one hand, people have little understanding of lightning knowledge, and even less understanding of how lightning can cause disasters; On the other hand, the corresponding lightning protection measures are not taken, even if the lightning protection measures are taken, but the method is improper or not comprehensive, and then the lightning protection design process of the building is not designed in strict accordance with the specifications, or the construction is not according to the design, or the construction is not according to the design, but the technical quality does not meet the requirements, resulting in the building "congenital insufficiency", leaving the hidden danger of lightning disaster.

Many experts believe that in recent years, the speed of urban construction across the country has been greatly accelerated, and high-rise buildings have sprung up like mushrooms after a rain, resulting in an increase in the ground potential, a shortening of the distance for lightning to penetrate the air, and a change in the city's magnetic field, making lightning to people's daily life. The impact on life is becoming more and more apparent. At the same time, with the wide application of electronic and microelectronic equipment, the urban communication power supply has increased significantly, and the urban electromagnetic field has changed, especially the microelectronic products generally have low dielectric strength, poor overvoltage tolerance, and are prone to lightning attack, among which computer networks, communication command systems and public antennas are the hardest hit areas.

In a sense, the more advanced technology is, the greater the threat of lightning strikes to people.

The occurrence of lightning accidents is not unrelated to people's awareness of lightning protection. Most people's awareness of lightning protection is still only in the stage of preventing direct lightning, but they do not know that the harm caused by direct lightning has been significantly reduced, but the harm caused by induced lightning and lightning wave intrusion has greatly increased. According to the statistics of a German insurance company, among the damage caused by various disasters in Germany, induced lightning strikes topped the list, accounting for all disasters.

The occurrence of lightning accidents is not unrelated to people's awareness of lightning protection. Most people's awareness of lightning protection is still only in the stage of preventing direct lightning, but they do not know that the harm caused by direct lightning has been significantly reduced, but the harm caused by induced lightning and lightning wave intrusion has greatly increased. According to the statistics of a German insurance company, among the damage caused by various disasters in Germany, induced lightning strikes topped the list, accounting for all disasters.

The lightning rods on general buildings can only prevent direct lightning, but the induced lightning and impulse voltages generated by strong electromagnetic fields can sneak into the room and endanger equipment such as televisions, ** and networked microcomputers, and even endanger people's safety. At present, there are still many buildings and computer rooms that still have relatively complete lightning protection measures.