We all know that lightning and thunder will happen when it rains heavily, but do you know why it thunders? What is the reason for the thunder? Here are my reasons for thunder. Welcome to read.
Why thunder?
Lightning is a discharge phenomenon in Thunderstorm clouds.
Principle:
After the formation of cumulonimbus clouds, the clouds will be filled with water vapor running up and down, which will produce static electricity. The upper end of the cloud will produce positive charge, the lower end of the cloud will produce negative charge, and the ground is positive charge. Then, there is air between the positive and negative charges as the insulator. If the voltage difference between the positive and negative charges is large enough to break through the air of the insulator and make the air expand, explode, heat and emit light in an instant, the luminescence is lightning, The loud sound of expansion explosion is thunder.
When will it thunder?
This time period is unpredictable and there is no fixed time period.
The general situation is to awaken the hibernating animals in the soil by the sudden movement of spring thunder. At this time, the temperature rises rapidly and spring thunder sprouts gradually. There is more thunder this season. The duration of the thunder cannot be measured.
What should we pay attention to when it thunders?
1. In thunderstorm weather, do not stay on high-rise platforms, mountaintops, ridges or the top of buildings and structures, and do not stay in small buildings, garages, sheds, sentry boxes and nearby without lightning protection facilities.
2. Keep away from exposed water pipes, gas pipes and other metal objects and power equipment.
3. It is not suitable to avoid thunderstorms under big trees. If it is absolutely necessary, keep at least 5m away from the trunk, squat down and close your legs.
4. If there is a sense of ants crawling away at the head, neck and hands and the hair is erect during the thunder and lightning, it indicates that lightning will occur. You should lie on the ground quickly, so as to reduce the risk of lightning, and take away the metal ornaments, hairpins, necklaces, etc.
5. If you encounter thunderstorm outdoors and have no time to leave tall objects, you should immediately find some dry insulation on the ground and sit on it with your feet closed. Do not put your feet on the ground other than the insulation, because water can conduct electricity.
6. When avoiding thunderstorms outdoors, pay attention not to support the ground with your hands, hold your knees with both hands, keep your chest close to your knees, and lower your head as much as possible, because the head is most vulnerable to lightning than other parts of the body.
7. When you hear thunder within a few seconds after seeing lightning outdoors, it indicates that you are in a dangerous environment of near thunderstorm. At this time, you should stop walking, put your feet together and squat down immediately. Don't pull together with people. It's best to use plastic rain gear, raincoat, etc.
8. In thunderstorm weather, it is not suitable to hold an umbrella in the wilderness, or hold up a badminton racket, golf club, hoe, etc., so as to avoid increasing people's effective height and becoming a "tip" and being struck by lightning. It is not suitable for outdoor ball games. It is very dangerous to play football, basketball and other sports in thunderstorm weather; It is not suitable to stay on the water surface and water edge; It is not suitable to wash clothes, fish, swim and play by the river.
9. In thunderstorm weather, it is not suitable to drive a motorcycle, ride a bicycle and run wildly in the rain, because the larger the step of the body, the greater the voltage and the easier it is to hurt people.
10. If you see the high-voltage line broken by lightning outside, you should be vigilant at this time, because there is step voltage near the breakpoint of the high-voltage line. People nearby should not run at this time, but should put their feet together and jump away from the scene.
Precautions for outdoor lightning protection
1. In thunderstorm weather, do not stay on high-rise platforms, mountaintops, ridges or the top of buildings and structures, and do not stay in small buildings, garages, sheds, sentry boxes and nearby without lightning protection facilities.
2. Keep away from exposed water pipes, gas pipes and other metal objects and power equipment.
3. It is not suitable to avoid thunderstorms under big trees. If it is absolutely necessary, keep at least 5m away from the trunk, squat down and close your legs.
4. If there is a sense of ants crawling away at the head, neck and hands and the hair is erect during the thunder and lightning, it indicates that lightning will occur. You should lie on the ground quickly, so as to reduce the risk of lightning, and take away the metal ornaments, hairpins, necklaces, etc.
5. If you encounter thunderstorm outdoors and have no time to leave tall objects, you should immediately find some dry insulation on the ground and sit on it with your feet closed. Do not put your feet on the ground other than the insulation, because water can conduct electricity.
6. When avoiding thunderstorms outdoors, pay attention not to support the ground with your hands, hold your knees with both hands, keep your chest close to your knees, and lower your head as much as possible, because the head is most vulnerable to lightning than other parts of the body.
7. When you hear thunder within a few seconds after seeing lightning outdoors, it indicates that you are in a dangerous environment of near thunderstorm. At this time, you should stop walking, put your feet together and squat down immediately. Don't pull together with people. It's best to use plastic rain gear, raincoat, etc.
8. In thunderstorm weather, it is not suitable to hold an umbrella in the wilderness, or hold up a badminton racket, golf club, hoe, etc., so as to avoid increasing people's effective height and becoming a "tip" and being struck by lightning. It is not suitable for outdoor ball games. It is very dangerous to play football, basketball and other sports in thunderstorm weather; It is not suitable to stay on the water surface and water edge; It is not suitable to wash clothes, fish, swim and play by the river.
9. In thunderstorm weather, it is not suitable to drive a motorcycle, ride a bicycle and run wildly in the rain, because the larger the step of the body, the greater the voltage and the easier it is to hurt people.
10. If you see the high-voltage line broken by lightning outside, you should be vigilant at this time, because there is step voltage near the breakpoint of the high-voltage line. People nearby should not run at this time, but should put their feet together and jump away from the scene.
What should I pay attention to when thundering indoors?
1. Do not turn on household appliances
You can't turn on household appliances such as TV and computer at home. Unplug the plug, because thunder can short-circuit the electrified household appliances and TV sets, causing a fire source and unimaginable consequences.
2. Do not call
Never call when there is thunder. Because the radio wave transmission used by the telephone can easily lead to lightning on yourself, resulting in serious consequences.
3. Close the doors and windows
Pay attention to closing doors and windows to prevent lightning from directly hitting the room or the invasion of side lightning and ball lightning.
4. Shower and solar water heater should not be used
Because the water pipe is connected with the lightning protection grounding, the lightning current can be conducted through the water flow and cause casualties.
5. In case of rainstorm, it's best to wear rubber shoes, which can play the role of insulation.
6. The iron wire used for drying clothes and bedding shall not be pulled to the window and door to prevent the iron wire from causing death due to lightning.
7. Keep away from exposed water pipes, gas pipes and other metal objects in the building.