Electrostatic pressure is very high, why is it harmless to human body?

Static electricity is harmful to human body. When the electrostatic voltage reaches 2000 volts, fingers will feel it. If it exceeds 3000 volts, sparks will appear, and fingers will feel pricked. When it exceeds 7000 volts, people will feel an electric shock. In daily life, the generated electrostatic voltage can sometimes be as high as tens of thousands of volts. However, due to the short electrification time and small current generated by friction, it generally does not pose a life threat to the human body. However, on the medical operating table, electrostatic sparks will cause the explosion of anesthetics, which will hurt medical staff and patients, and must be paid attention to. In addition, a large amount of dust adsorbed by static electricity contains many viruses, bacteria and harmful substances. It is harmful to human health. Severe static electricity can cause skin spots and inflammation, make people feel irritable, dizzy, chest tightness, nasopharyngeal discomfort, and even cause bronchitis, asthma and arrhythmia. ...

Static electricity does a lot of harm to people, but it also has many benefits. For example, people have applied electrostatic technology to industrial and agricultural production and life, such as dust removal, printing, spraying, flocking, sorting, seawater desalination, spraying pesticides, artificial rainfall, low-temperature freezing, spacecraft replenishment and so on.

The simplest way to eliminate the harm of static electricity is to introduce static electricity into the ground, such as grounding the equipment with wires; Install discharge brushes at the wing tip and tail of the aircraft, and use grounding tires and grounding wires on the landing gear of the aircraft; The tail of the tanker is tied with a grounding chain; In the chemical production, storage and transportation departments, it is forbidden to use chemical fiber fabrics, and it is forbidden for workers to wear chemical fiber work clothes. In daily life, we can also take some simple measures to eliminate static electricity, such as underwear, quilts, sheets, quilts and so on. It is best to use cotton fabric instead of chemical fiber; In the family room, you can often spray water and humidify it to eliminate static electricity.