Lightning protection tips: 1) Signs before lightning strike: When you stand in an empty mine, if you feel your hair suddenly stand on end, your skin will tingle slightly and even hear a slight crackling sound, which is a sign that lightning is about to hit you. In this case, you should squat down immediately. Before leaning forward, put your hands on your knees and bend them into a ball. Never lie flat on the ground. Lightning strike, how to first aid? After being struck by lightning, strong voltage makes people's heart stop beating, so the cause of death is that the heart stops beating, not being burned. Therefore, if CPR can be used for rescue within 4 minutes, it is possible to be saved and the heart will return to beating. However, people have a wrong idea that there is still electricity in the human body hit by lightning, and they dare not touch him, which often leads to the delay of rescue time. If a group of people are struck by lightning, it doesn't matter to moan. First, save those who can't make a sound. 2) Ten precautions for outdoor lightning protection: Lightning usually hits the spire of the tallest outdoor object, so isolated tall trees or buildings are often the most vulnerable to lightning strikes. When there is thunder and lightning, people should abide by the following rules outdoors to ensure safety. 1, don't stay on the platform of high-rise buildings in thunderstorm weather, and don't enter isolated shacks, sentry boxes, etc. In the open air. 2. Stay away from the exposed water pipes, gas pipes and other metal objects and power equipment in the building. 3. It is not advisable to hide under the big tree during a thunderstorm. If necessary, you must keep a distance of 3 meters from your torso, squat down and put your legs together. 4. If there are ants crawling on your head, neck and hands when thunder and lightning strike, and your hair stands on end, it means that lightning is coming. Get down on the ground quickly to reduce the risk of being struck by lightning, and take away the metal ornaments, hairpins and necklaces you wear. 5. If you encounter a thunderstorm outdoors and have no time to leave tall objects, you should immediately find some dry insulation and sit on it with your feet crossed. Don't put your feet on the ground outside insulation, because water can conduct electricity. 6. When avoiding thunderstorm outdoors, be careful not to hold the ground with your hands. At the same time, put your hands on your knees, keep your chest close to your knees, and keep your head as low as possible, because your head is more vulnerable to lightning than other parts of your body. 7. When you hear thunder within a few seconds after seeing lightning outdoors, it means that you are in a dangerous environment near a thunderstorm. At this time, you should stop walking, put your feet together and squat down immediately. Don't get involved with people. It is best to use plastic rain gear and raincoat. 8. In thunderstorm weather, it is not advisable to open an umbrella or hold high badminton rackets, golf clubs and hoes in the wild. Not suitable for outdoor ball games. It is very dangerous to play golf and football in thunderstorm weather. It is not advisable to stay on the water surface or water edge; It is not advisable to wash clothes, fish, swim or play by the river. 9. In thunderstorm weather, it is not advisable to drive a motorcycle, ride a bicycle or run fast in the rain, because the greater the stride of the body, the greater the voltage, and the easier it is to hurt people. 10. If you see the high-voltage line being broken down by lightning outdoors, you should be vigilant at this time because there is a step voltage near the breakpoint of the high-voltage line. People nearby must not run at this time, but should jump off the scene with their feet together. 1 1. It is best not to shower under the solar water heater during a thunderstorm; Stay away from windows and balconies; Turn off household appliances in time, but don't cut off the power supply when it thunders, just in case. 3) When you are struck by lightning, you should race against time to rescue: What if you are struck by lightning? First-aid experts pointed out that the voltage of lightning is extremely high, about 1- 1 100 million volts; The instantaneous current formed by lightning can reach 200,000-250,000 amps; A lot of heat generated by lightning usually reaches 30000 degrees Celsius. Lightning is much more harmful to human body than electric shock. Once we find someone struck by lightning, we must race against time to save him. Once a person is struck by lightning, he may have panic, dizziness, headache, pallor, trembling limbs and general weakness. Some injured people may have sequelae of the central nervous system, such as visual impairment, deafness, tinnitus, hyperhidrosis, mental restlessness and flaccid paralysis of limbs. In severe cases, convulsions, shock, coma, and even respiratory and cardiac arrest may occur. Some of them also have concussion, head, chest, abdomen trauma or limb fracture because they were knocked down or hit in an instant and fell from a height. After the lightning strike, citizens should call "120" for help, and those who are slightly injured should immediately move to a nearby rain and lightning protection place to rest; For seriously injured people, immediately rescue them on the spot, make them lie on their backs quickly, and continue to do artificial respiration and cardiopulmonary resuscitation until their breathing and heartbeat return to normal. Because lightning victims often lose consciousness and pretend to be dead, so don't think that there is no hope if you stop breathing and heartbeat. Artificial respiration and cardiopulmonary resuscitation should not be stopped until the death of the patient is completely confirmed and the doctor arrives at the scene. If the on-site rescue of lightning victims can be timely, correct and effective, the lives of some injured people are likely to be saved. 4) Try not to use your cell phone in rainy days: Do thugs get an electric shock in lightning? The reporter interviewed relevant experts in this regard. Professor Yu Zhihao, a meteorologist at Nanjing University, believes that due to the interference of lightning, the wireless frequency hopping of mobile phones is enhanced, which is easy to induce accidents such as lightning strike and machine burning. But generally speaking, there are lightning protection devices in public residential areas, and people are relatively safe in this environment. Thunder and lightning will only interfere with the mobile phone signal, damage the chip at most, and will not cause fatal harm to the human body. Once in the open area, people and mobile phones will become obvious bumps on the ground, and mobile phones are likely to become the discharge objects of Lei Yun's choice. Experts from Jiangsu Lightning Protection Center reminded the public that it is necessary to strengthen the awareness of lightning protection, especially the power supply and signal system, and try to avoid calling or answering mobile phones when it thunders. When walking through an area without obstacles in a thunderstorm, it is best to turn off the power of the mobile phone.