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空气干燥时,若穿上化纤衣服时间久了,身上的静电可能积累到几千伏甚至几十万伏。当静电超过2～3千伏,人在接触门把手等导电物体时,就会产生静电放电(电击)。静电放电产生的电磁场强度也很强,这种强电磁作用时间虽短,但其强度远比手机辐射的电磁场强得多,且放电的次数非常多。
When the air is dry, if the chemical fiber clothes are worn for a long time, the static electricity on the body may accumulate to thousands of volts or even hundreds of thousands of volts. When static electricity exceeds 2 to 3 kV, an electrostatic discharge (electric shock) occurs when a person touches a conductive object such as a door handle. The intensity of the electromagnetic field generated by electrostatic discharge is also very strong. Although this strong electromagnetic action time is short, its intensity is much stronger than the electromagnetic field radiated by the mobile phone, and the number of discharges is very large.