Static electricity problem
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Dear heroes: I would like to ask what form of electrostatic discharge you can see when you take off your sweater in winter? What is the discharge mechanism? ? Does it reach a certain voltage before it breaks down the air and then discharges? ? ?
The accumulated static electricity is negative charge, reaches a certain voltage, and then breaks down through the air and is discharged to the ground.
How to ground discharge when taking off a sweater?
Just roll on the wet ground.
Different substances and materials have differences in the energy levels of their molecules' frontline orbitals, which are commonly known as HOMO and LUMO orbitals. Charge transfer and transfer will occur during the friction process. Generally, the HOMO with a higher energy level transfers to the LUMO orbit with a lower energy level, which breaks the charge balance of the molecule. After accumulation to a certain extent, the excess charge is released through tip discharge, which is static electricity.
Molecular orbital theory is closely related to static electricity accumulation. The frontier orbital theory explains the energy levels of molecular orbitals and the bond energy of conjugated double bonds. It also explains the chemical reactions of substances with multi-electron large Π bonds and the stability of compounds. It is not directly related to the accumulation of static electricity. Molecular bond energy and electrostatic energy are not physical concepts at all. The main reason for the accumulation of static electricity is that the static charge in the insulator is not easily released through conduction.
It is also difficult to solve the problem of static electricity. The experiment requires that the plastic beaker with static electricity be weighed on an analytical balance. How to solve the problem of unstable indication value?
This post was last edited by qugd on 2016-12-21 09:43. It is easy to handle. Use those multi-strand thin-core wires to make a small brush. The brush head is those thin copper wires. The tail of the brush is connected to the ground terminal or heating pipe. Brush the object to be weighed before weighing. In addition, when picking up the container, wear an anti-static wristband to prevent static electricity from the body and hands from being sensed by the weighed object. I've used this method very effectively in the lab before.