Why did it thunder yesterday?

Not long ago, dozens of people were injured by lightning in Juyongguan Great Wall. Some people suspect that it is caused by someone using a mobile phone when it thunders, so they think it is dangerous to use a mobile phone when it thunders. At the 2004 national seminar on lightning protection technology for communication held in Nanjing University of Posts and Telecommunications yesterday, experts pointed out that this statement was unfounded. Experts say there is no scientific basis for mobs to attract induction lightning in rainy days. When it thunders, the magnetic field of mobile phone will change to some extent, but it is not enough to pose a threat to people's health. The frequency of mobile phones is as high as 900 to 1800 MHz, while the frequency of lightning is only a few tens of MHz, so there is generally no problem. You can't use your mobile phone when it thunders, which only means that lightning will damage the mobile phone itself. Pay attention to watching TV and playing computer when it thunders. Especially for computers, lightning can easily damage computer hardware and networks. Even if the computer has a good grounding wire, it is best not to surf the Internet, because lightning may invade the equipment along the signal wire and damage the chip and interface of the computer motherboard. Recently, Dory issued a notice when it thundered 1. When it thunders, the first thing to do is to close the doors and windows to prevent lightning from hitting the room directly, or to prevent spherical lightning from floating into the room. When encountering thunderstorm, people should not stand under the light bulb, but cut off the power supply of household appliances to avoid damage. 3. In thunderstorm weather, try not to dial, answer the phone or use the mobile phone to surf the Internet. Unplug the power supply, telephone lines, closed TV lines and other metal lines that may introduce lightning. There is no lightning protection facility for the external network cable or telephone line. Lightning may enter the computer along the power cord or telephone line, damaging the chip, interface and internet equipment of the computer motherboard, resulting in hardware damage and communication failure. For notebook computer users, it is also easy to cause personal injury accidents. 4, indoor, should also be left with the driver's metal pipes and sewer pipes connected to the roof. Don't pull the wires used to dry clothes and bedding to the window or door, lest the wires cause death. Outdoor lightning protection 1, thunderstorm weather, don't answer and call the mobile phone outdoors, because the electromagnetic wave of the mobile phone can also cause lightning. At the same time, it is forbidden to get close to some running power facilities when it thunders. Under normal circumstances, people will not be struck by lightning when riding a car, but never stick your head and hands out of the window when being struck by lightning when riding a car. 3. In case of sudden thunderstorm, when your hair becomes stiff and stands up, you should squat down, lower your height, and put your feet together at the same time to reduce the damage caused by stepping voltage. Don't take shelter from the rain under the big tree. It is best to stay 5 meters away from the tree when it thunders. 5. When going out in thunderstorm weather, it is best to wear rubber shoes, which can keep warm. References:

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