In the dry winter conditions, when you touch the door handle, or shake hands with people, often have the feeling of being shocked. Please explain why is this?
With the tip discharge, the fingertip contact with the object, the contact area is small, according to the tip of the charge density, resulting in discharge
It is the body static, winter, summer will have. Human body static electricity is due to the human body's clothing and other friction generated by the attached to the human body static electricity. The generation of static electricity is due to the fact that the attraction of the outer electrons to the outer electrons is not sufficient to lose electrons under the influence of friction or other factors, resulting in some negatively charged negatively charged (ie, negatively charged with electrons) Electrons with positive charge). In the case of better insulation properties of the friction, these charges can not be lost, it will gather together. And the capacitance of the insulator is extremely poor, resulting in a situation where the amount of charge is small but the voltage is high. Wearing chemical fibers made of clothing is more prone to static electricity, and cotton clothing produced less. And because the dry environment is more conducive to the transfer and accumulation of charge, so the winter people will feel the body of the larger electrostatic. Under different humidity conditions, the electrostatic activity produced by human activities is different. Winter dry weather, wear clothes, do not often touch the water, resulting in static opportunities will be more. Summer, of course, there will be the same as the human body static, but only less than winter.
The friction between your clothes makes you static, when you contact with people or metal, the charge transfer creates a current that gives you a feeling of being shocked.
