Some measures to prevent lightning

Currently in the rainy season in Vietnam, so often lightning strikes happen very easily for us. However, not everyone knows how to prevent lightning to protect themselves and their loved ones.

How to prevent lightning

Not able to resist absolute lightning

Studies by the Institute of Geophysics show that Vietnam is located in Asia's center - one of the three centers in the world, with strong thunderstorms. The spring season in Vietnam is relatively long, the average number of days is 100 days per year and the average number of hours is 250 hours per year. Every year, Vietnam suffers from two million lightning strikes. Areas such as Co Dung (Hai Duong), Son Loc (Ha Tinh), Mekong Delta . are places considered lightning.

According to Dr Anh, since 2005, the Institute of Geophysics has completed research on lightning and prevention solutions. Research results have enough data to be able to build lightning protection rules in Vietnam. However, Dr Anh also said: " Absolute lightning protection is impossible for humans today. Not only Vietnam but even the world can only study to reduce the harm of the type. This disaster ".

Outdoor lightning protection

According to scientists, the storm usually comes very quickly within 15 minutes and moves at a speed of 40km an hour. In general, when you are in an unsafe place, you should pay attention to the signs of thunderstorms , cold air and wind .

It is possible to estimate the distance from where the lightning is coming from by estimating the time from the moment the lightning flashed and the sound of thunder. Divide the number of seconds for 3 to be the distance to the lightning. For example, if counting for 3 seconds, the lightning is 3/3 = 1km away from the standing position.

There is also a method of determining the location of lightning that is sensing the body when it is in the area of ​​rain and rain. If you see your hair, hair, and hair, then you are in danger of being struck by lightning, in this case, you must immediately hold your legs together, cover your ears with your hands, lower your body (but do not let your body touch the ground outside the two tables). foot). After hearing the thunderbolt for about 7-10 minutes, the last lightning could return to its normal state.

Sitting posture to avoid being struck by lightning

If this time is less than 20 seconds, you must move to a safer place. When you hear the first thunder no matter what you need to see the danger has come. Lightning can hit far away from the place with rain to 15-20km. People who are working or traveling outside need to seek safe shelter.

If outdoors, absolutely do not use trees to shelter rain, avoid higher areas around, avoid metal objects such as bicycles, machines, iron fences . Should find a dry place, If there is a higher tree around, it is better to find a low place, find a low position. The lower the person in the position, the better, the hand holding the neck, the contact part of the person with the ground is the least; tiptoe, do not lie down on the ground. In particular, do not stand in groups of people close together.

Indoor lightning protection

However, when the thunderstorm is about to happen, the best way to avoid lightning is to go home or work. Homes and offices . should install lightning protection systems (the simplest is lightning rod).

When staying indoors, stand away from windows, doors, electrical appliances , avoid damp areas such as bathrooms, water tanks, faucets, do not use the phone unless absolutely necessary. It is advisable to unplug electrical equipment before any thunderstorms occur. With telephone lines or wires because of connecting to external grids, it is very likely to be affected by lightning spread. Keep away from these wires and electrical objects with a distance of at least 1 meter. The antenna must be removed from the television when there is thunderstorm.

If you feel that your hair is being erected (like an electric sensation when touching your hand in front of the television), that means it can be struck by lightning at any time, immediately sit down and cover your ears, don't lie down on the ground or put your hands on the ground.