Matter consists of atoms, which contain neutral neutrons, positively charged protons and negatively charged electrons. Under normal circumstances, the number of protons and electrons in an atom is equal, and the positive and negative charges are balanced, so there is no charge. When two objects rub against each other, the heat generated increases the energy level of electrons, making inactive electrons become active electrons that are easy to escape. This electron can be transferred from one object to another, making two neutral objects charged. This is the well-known phenomenon of "friction electrification".

In the process of triboelectrification, the quantity and speed of electron transfer are not only related to the performance difference of materials, but also to the temperature and humidity in the field. In autumn and winter, due to the low air humidity, low intermolecular viscosity and accelerated movement speed, static electricity is easy to be generated. Not only the flowing air will generate static electricity, but also our actions such as walking on the floor, rotating the swivel chair, opening and closing the drawer, holding the pen and paper, moving the mouse, etc. , will also produce static electricity, so that these objects and the human body with electrostatic charge.

In addition to friction electricity, there are also electrostatic reasons such as "induction power generation" and "capacitance power generation" in electrical equipment. Even if there is no contact between equipment, circuits, metal and nonmetal structures, static electricity will be generated in the above two ways. As the saying goes, birds are not photographed on the other side of the mountain, but even if objects are separated by a certain distance, electrostatic induction will occur: CRT display screen, as an induction source, will also induce static electricity on our bodies, leaving our faces covered with dust; Due to the parasitic capacitance between two parallel wires, charges will also be transferred between them.

Various ways of generating static electricity make static electricity ubiquitous in our surrounding environment. It is no exaggeration to say that we live in an electrostatic world. Question: Why does smoke film stick to hands?

My guess: does the material used to make paper film have adsorption?

My survey:

So I do experiments with magazines. I took the waste magazine and put a clean and dry hand in my palm. As a result, they were separated independently. I remember the teacher saying that science focuses on facts. I continued to find newspapers and clothes wrapping paper for experiments. None of them will stick to my hands. I came to the conclusion that the paper wouldn't stick to my hand.

I continued to do the experiment: cigarette paper film. First, I found a pack of cigarettes, tore off its paper film and held out my clean hand. Hey! The paper film stuck to my hand. It's amazing! Repeat the experiment just now, and the paper film still sticks to your hand. So I went to check the information, and the result is this! Because both fingers and paper film have static electricity, static electricity causes paper film to stick to hands; Because their charges are unbalanced, they will suck up, and when the charges are balanced, the paper film will fall off.

I also remembered the static phenomenon that the teacher said. Use a combed comb to get close to the scraps of paper, which will be sucked up; Comb your hair in dry autumn, it will suck. ...

My conclusion: Static electricity is everywhere in life.