Safety Education Manuscript: Should I turn off my mobile phone when it thunders and rains?

With the arrival of summer, strong convective weather increases, and lightning weather also increases. In thunderstorm weather, many people will turn off the TV, unplug the power and turn off their mobile phones. Is this really necessary? Recently, the reporter learned from Li Long, director of Yibin Meteorological Center and chief engineer of lightning protection center that residents have a certain understanding of indoor and outdoor lightning protection, but there are also some misunderstandings. For example, even in thunderstorm weather, mobile phones can still be used indoors, with perfect lightning protection devices.

Lightning strikes often occur in rural areas.

According to the statistics of lightning protection center of Yibin Meteorological Bureau, there were 7 lightning accidents in Yibin City in 20 15 years, resulting in 2 deaths and 3 injuries. In 20 15 years, there were 32 lightning disasters in Yibin city, including death 1 person and economic losses of tens of millions. Lightning accidents that cause personal injury mainly occur in urban suburbs, rural areas and outdoors.

? Urban suburbs and rural areas are areas with frequent lightning disasters. ? Li Long said that most houses in rural areas were built by villagers themselves, and most of them were not equipped with lightning protection facilities. At the same time, the random connection of rural TV and telephone signal lines and power supply lines also opens the door for lightning to enter the room. Seven years ago, a case occurred in Guanyin Town, Yibin. A nine-year-old boy was invaded by lightning from the power supply line and was hit by a power socket and died. In urban areas, because the design evaluation, construction inspection and completion acceptance of lightning protection devices are relatively standardized, most newly built, expanded and rebuilt houses have complete lightning protection devices when they are put into use, so lightning accidents are less.

Stay away from indoor metal pipes.

There are two main types of lightning protection: external lightning protection and internal lightning protection. External lightning protection mainly uses lightning rod, lightning protection network and other connectors to lead lightning into the underground, while internal lightning protection mainly includes equipotential shielding and lightning protection device (SPD) to discharge the strong overvoltage invading the room.

Outdoor, the damage of lightning to people is mainly to directly hit objects with high potential, as well as to hit with step voltage (the voltage difference between a walking person's feet). Therefore, during a thunderstorm, stay away from tall objects such as trees, telephone poles and chimneys. Don't open an umbrella in the open field, don't run, and don't use metal objects outdoors. Indoors, try to stay away from doors, windows, balconies and external walls. Do not approach or touch any metal pipes, including water pipes and natural gas pipes, and do not use solar water heaters. Try not to use household appliances, such as TV, landline phone and computer. It is necessary to unplug all power plugs. Lightning misunderstanding

Can't I use my mobile phone in thunder weather?

Many people think that you can't use your mobile phone in a thunderstorm, because the electromagnetic wave of your mobile phone will attract lightning. Li Long thinks this view is wrong. The electromagnetic wave of mobile phone has nothing to do with attracting lightning. The probability of mobile phone attracting lightning is the same as that of us wearing metal frame eyes or metal ornaments. ? Li Long said. Therefore, mobile phones can be used indoors and have perfect lightning protection devices. Was struck by thunder?

When I was a child, my elders always said? People who do bad things will be struck by lightning. ? Lei Gang remembers your mistakes and will carve words on you. ? Li Long explained that lettering is not a legend. So what? God? , but a human body after being struck by lightning? Flashover phenomenon? . After the human body is struck by lightning, the current will pass through the surface of the human body in the form of arc. Because there is still water in the body, it conducts electricity, and water evaporates quickly under lightning, leaving traces on the skin surface, like? Like carving.