Take a sheet of paper, press it against the wall and release it, you can see that it instantly falls

Take a sheet of paper, press it against the wall and release it, you can see that it instantly falls, but if you rub the sheet pressed against the wall with a woolen cloth, it will hold on to the wall as glued for some time. How can this phenomenon be explained?

A sheet of paper, if rubbed with a woolen cloth, will stick to the wall due to static electricity, which arose as a result of friction with wool, as electrons were redistributed, which left their orbits and attached to other atoms. It will keep the sheet on the wall due to the fact that the atoms will try to either get rid of the excess of electrons (this is a negative charge), or grab the missing electrons when they are deficient (this is a positive charge). It is because of this interaction between the atoms of the wall and the atoms of the sheet of paper, in which a deficit or excess of electrons from the atoms was formed by friction, the paper will stay on the wall for some time.



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