“噼里啪啦”“怒发冲冠”“电光火石”……全国静电指数地图来了↓

Group 1 - The core viewpoint of the article highlights the increased risk of static electricity across more than 15 provinces in China due to dry weather conditions, with a significant focus on the period from November 20 to 22 [2][5][7] - The static electricity index is notably high in various regions, including the Beijing-Tianjin-Hebei area, with relative humidity dropping below 30% in many places, leading to heightened static electricity activity [5][7] - The article explains that static electricity is generated through friction during human activities, and dry air conditions exacerbate this phenomenon, making it more prevalent in autumn and winter [10][8] Group 2 - Static electricity can reach voltages of several thousand volts, with noticeable sensations occurring at 2000 volts and sparks at 3000 volts, although the current is typically too low to cause harm to humans [11][13] - To mitigate static electricity risks, the article suggests two main strategies: preventing excessive static accumulation by increasing humidity and using non-static-prone materials, and timely discharge of accumulated static through methods like touching walls or using metal objects [14][19]