During the dry season, when people open windows or open car doors, their fingers often feel a tingling sensation. This is a sign that the human body is releasing static electricity.
Research shows that two conditions are generally required for the human body to generate static electricity: one is dry air, and the other is non-conductive chemical fiber clothing. If the air is relatively dry and the relative humidity is within 40%, the skin surface will be abnormally dry, the resistance value will increase, and a large amount of charge will accumulate on the local skin. If you are wearing chemical fiber clothing, it is difficult for the charge to be discharged. When your fingers touch a metal conductive object, the body's static electricity will be suddenly released, and your fingers will feel like they are being shocked.
How to avoid and reduce the harm of static electricity to the body? Generally, we can start from the following aspects: increasing the indoor air humidity. On dry sunny days, using a humidifier is the best way; it is best not to use carpets made of chemical fiber materials and furniture with plastic surface materials indoors; televisions, Household appliances such as air conditioners and computers should be connected to the ground wire; try not to wear chemical fiber clothing in winter and choose cotton or silk clothing.