There are nearly 5000 thunderstorms in Beijing. Will the mobile phone really be struck by lightning in rainy days?

Will the mobile phone really be hit by lightning in thunderstorm weather?

Faced with the roar of Lei Gong, the media often give "guidelines", "tips" and "memos" for lightning protection in rainy days. One of the more common ones is: never answer the phone with your mobile phone when it rains and thunders. It's better to turn off your mobile phone. In order to prove this point, a series of cases of being struck by lightning while using mobile phones are also listed. But will cell phones really attract lightning?

Mobile phone is also called wireless phone, and the word lightning. People can't help but worry about having an affair. There are various electronic components in the mobile phone, including an antenna that can receive radio waves. They are all metal conductors. Will Uncle Lei let them go?

These electronic components are very tiny. The circuit in the mobile phone is driven by the battery, which receives weak radio waves and then generates relatively small current in the circuit to work. The intensity of radio waves used by mobile phones is only several hundred thousand times that of lightning electric field, which will not attract the attention of lightning. In addition, holding a mobile phone several centimeters long in hand will not increase the user's height, but will attract lightning like a lightning rod, increasing the risk of being struck by lightning.

Some people think that mobile phones will actively "lure" lightning on the grounds that the electromagnetic waves used by mobile phones will ionize the air and increase the conductivity of the air. In fact, this will not happen. As I said just now, the radio wave energy of mobile phone is too low, and its electromagnetic wave section does not have the ability to affect the air conductivity. Generally speaking, the higher the frequency of electromagnetic waves, the stronger the ionization. High-frequency cosmic rays have a strong ionization effect on air, and solar ultraviolet rays can also ionize air to produce ozone. Visible light with a frequency slightly lower than ultraviolet light cannot do this. The frequency of mobile phone radio waves is lower. In terms of ionizing air, it is only a soy sauce manufacturer.

To prove whether there is a relationship between using a mobile phone and being struck by lightning, we should not only explore the physical principles behind it, but also let the numbers speak for themselves, and enough statistical data can be convincing. If you want to look at this problem comprehensively, you should consider four numbers like tongue twisters: 1, how many people use mobile phones when thunder strikes; 2. How many people didn't use their mobile phones when it thundered, but were struck by lightning; 3. How many people use their mobile phones when it thunders, but they are not struck by lightning; 4. How many people didn't use their mobile phones when it thundered and didn't get struck by lightning? ...

Many people who believe that "mobile phones attract thunder" often only pay attention to the first number and ignore the last three numbers. Simple examples of several victims being struck by lightning while using their mobile phones, no matter how vividly described, can not completely prove that there is a rope between using mobile phones and being struck by lightning. These examples not only show that mobile phones can attract the limelight, but also prove the popularity of modern mobile phones.

In the United States, in the face of the constant media reports that "mobile phones are in close contact with lightning", experts from the National Oceanic and Atmospheric Administration of the United States have publicly stated that neither mobile phones nor small metal objects will attract lightning, and people are struck by lightning while talking on their mobile phones only because they are standing in the wrong place at the wrong time.

However, the mobile phone's brother, the wired phone, is not the case. Answering a wired phone when it thunders does increase the risk of lightning strike. Telephone lines connect outdoor and indoor, and outdoor objects are more likely to be hit than indoor ones. If telecommunications equipment or objects around it are struck by lightning, it may indeed endanger telephone users.

In this way, in thunderstorm weather, using mobile phone instead of fixed telephone is an excellent safety choice.

"The chance of a mob being struck by lightning in rainy days"

There is often a lightning protection "guide": when it rains and thunders, you must not answer the phone with your mobile phone. It's best to turn off the mobile phone, otherwise it will easily lead to lightning strike.

In fact, the electromagnetic waves emitted by mobile phones cannot ionize air and make it a conductor. The electromagnetic wave of mobile phone belongs to decimeter wave, the frequency is 900/ 1800MHz, and the corresponding wavelengths are 33/ 16cm respectively, which is 7-8 orders of magnitude larger than the wavelengths of visible light and ultraviolet light. Therefore, the electromagnetic wave of mobile phone can't make any gas molecules or atoms free, and it can't cause lightning.

Need to be reminded that it is dangerous to call the landline, because lightning can enter the room along the metal telephone line.

News report: A man's Bluetooth mobile phone in his pocket was seriously injured by lightning in a thunderstorm.

From April 4 to 5, a strong thunderstorm visited Xingcheng again, which led to many lightning accidents in the city. According to the staff of the Meteorological Observatory, Changsha has entered a rainy period and is prone to strong convective weather such as local heavy rain, thunderstorms and hail.

Xingsha citizens were seriously injured and Ningxiang houses were burned down.

At 2 pm on April 4, a Mr. Zhou was called in the rain and struck by lightning, and was rushed to Wangwang Hospital for treatment. The reporter learned in the hospital that Mr. Zhou and several friends were walking in Xingsha Street. Mr. Zhou is carrying an umbrella on his shoulder, carrying a mobile phone in his trouser pocket, and making a phone call with a Bluetooth headset while walking. Suddenly a flash of lightning flashed, the trouser pocket was ignited, and the mobile phone was scrapped. The reporter learned from Mr. Zhou's attending doctor that Mr. Zhou had multiple burns on his lower body and burns on his back. Fortunately, his life is not in danger.

In addition, at about 3 pm on April 4, lightning caused electrical appliances in Baimaqiao comprehensive market in Ningxiang to catch fire, and six houses were burned down.

Changsha loses tens of millions of yuan every year due to lightning strikes.

According to experts from Hunan Lightning Protection Center, Hunan is located in the subtropical humid monsoon climate zone, with an average annual thunderstorm day of 50 to 60 days, up to 90 days. It belongs to the area with high lightning incidence, and the incidence of lightning accidents ranks eighth in the country. Every year from March to September, there are many lightning processes in our province, especially from April to August, which is the high incidence period of lightning in our province. Frequent lightning activities cause certain casualties and direct economic losses of tens of millions of yuan every year.

Lightning protection reminder

1. Try to stay indoors in thunderstorm weather, close doors and windows, stay away from metal doors, and unplug electrical appliances without lightning protection.

2. People who work outdoors should hide in lightning-proof buildings and stay away from trees, tall buildings, large metal objects or telephone poles.

3. Immediately stop outdoor swimming, boating, fishing and other water activities.

4. Don't let yourself become a sharp edge in the process of moving, try to reduce the height and contact area with the earth, and never run in big strides to reduce the step voltage.

5. The car is a good lightning protection place, and the metal body can effectively shield the lightning. Hiding in a cave can prevent lightning, but keep your feet together and no part of your body can touch the cave wall or ceiling. In the dense forest, choose a place with equal distance from the surrounding trees, put your feet together and squat down.

6. When there is no shelter in the open area, it is best to find ditches, valleys, depressions and other low-lying places to lower your body position or squat with your feet together.

Boys were struck by lightning when they answered their mobile phones in the rain.

On July 5, a lightning strike caused by answering a mobile phone occurred in Yexian County. It's a pity that a 18-year-old senior one boy.

Yesterday morning, after receiving the reader's report, the author rushed to Xindian Village, Xindian Town, Ye County, and met the grieving boy's family. According to Wang, the boy's neighbor, the unfortunate senior one boy was 18 years old and went home for a holiday after school a few days ago. On the afternoon of July 4th, he and his grandmother went to the fields outside the village to see the corn. At about 5 o'clock, it rained heavily, and the grandparents and grandchildren quickly hid under the tree. At this moment, the boy's cell phone rang, and he took out his cell phone to answer it. Suddenly there was a flash of lightning, and the boy was knocked to the ground. Grandma cried and shouted. The boys were rushed to the town health center, but it was too late "After being struck by lightning, his hands and chest turned to charcoal," said neighbor Mr. Li.

According to Mr. Mao of Xindian Town Health Center, the patient was taken to the hospital at 5 pm on July 4. After examination, the doctor found that the patient had no vital signs after being struck by lightning. Mr. Mao reminded the public that it is best not to answer the phone in rainy days.

10 what you can't do in a thunderstorm.

Indoor:

1. Don't make a phone call or answer a phone call during a thunderstorm and lightning, but turn off your mobile phone, because the electromagnetic waves of telephone lines and mobile phones will lead to lightning injuries.

2. Don't turn on the TV, computer, VCD player, etc. Unplug all power plugs during thunderstorms and lightning to avoid personal injury and electrical damage.

3, don't stand under the light bulb, don't take a shower.

4. Try not to open the door or open the window to prevent lightning from hitting the room directly. Don't connect the wires for drying clothes and bedding to the doors and windows.

5. When lightning strikes, don't get close to all power facilities, such as high-voltage line transformers. Do not approach or touch any metal pipes, such as water pipes, heating pipes, sewer pipes, etc., when it thunders;

Outdoor:

1. Don't use metal-pointed umbrellas in open places and don't carry metal objects on your shoulders;

2. Don't let several people get together or run hand in hand in thunderstorm weather, and keep a certain distance from each other.

3. Stay away from trees during a thunderstorm. Try not to run in big strides. You can choose buildings to shelter from the rain, but don't choose cars to shelter from the rain. Don't stick your head and hands out of the window when you encounter lightning in the car.

Don't wear wet clothes, hats, shoes, etc. Walking in a thunderstorm. For sudden lightning, the height should be lowered immediately, and the feet should be close together to reduce the harm caused by the step voltage.

5. Try not to go out. If you have to go out, you'd better wear rubber shoes and a raincoat, which can keep out lightning.

Dangerous environment of thunderstorm weather:

Open space, such as sports ground, parking lot, playground, etc. ;

Isolated trees, lamp poles, large billboards, antenna towers;

Outdoor iron fences, overhead lines and rails;

Isolated and prominent commanding heights, such as hilltops, ridges and roof areas of buildings;

Outdoor water surface or land-water junction, such as swimming pool, lake, etc. ;

Small buildings, warehouses, shacks, tents and temporary residences without lightning protection devices;

Non-metallic roofs or open vehicles and boats.

Safety environment of thunderstorm weather:

Houses or other buildings protected by qualified lightning protection devices;

Underground bunkers, such as underground tunnels;

Large metal frame building;

Vehicles with metal roofs and bodies, such as cars and buses;

A ship or boat with a metal shell;

A city street with buildings nearby.

Relatively safe environment and relatively safe environment in thunderstorm weather;

If you can't find a safe shelter for a while, please follow the following principles to find a safer place and take corresponding measures to reduce the danger:

1. Look for dense trees and avoid being under isolated trees;

2. Look for buildings, tents and shelters built in depressions, and don't stay at the top of the mountain or high places;

3. If you are in an open exposed area, put your feet together, bend your head as far as possible, put your knees in your hands, and remove the metal items you carry with you. Don't lie flat on the ground;

4. If you are in a hurry, wear a raincoat that is not soaked by water, such as plastic; Walk slowly, take small steps.

References:

Fenghuang. com:/gundong/detail _ 2010 _12/01/3296543 _ 0.shtml.

Renren. com com:/share/234569924/3385420330

China Times Network:/news/China/201307/1094054410 _ 4.shtml.