5 static electricity experiments
In static electricity experiments, it is sufficient to understand that those with the same electricity repel and attract each other when they have different signs, without sticking to a very detailed principle, but also about electrostatic polarization and electrostatic induction. Please see the figure of. Charges are biased by an external charged body, which occurs in a non-conductor due to electrostatic polarization. In addition, electrostatic induction is a phenomenon that occurs in conductors, and it becomes charged by the movement of free electrons. Both are drawn towards the charged rod in the figure.
Experiment 1: You know, electric jellyfish
you need : tin plastic tape, PVC pipe, tissue
squeeze the middle. Tear it into small pieces. After that, rub the jellyfish and PVC pipe with a tissue etc. to generate static electricity. After that, I enjoy floating in the air.
Experiment 2: dancing paper ・ Fuss in PET bottles
材料：ティッシュ、塩ビ管
Charge the PVC pipe to move the paper made of tissue. the paper is attracted to PVC pipes by electrostatic polarization. For PET bottles, put PS (polystyrene) Styrofoam globules in the PET bottle and shake well. PS is charged to + and bottle is charged to-. If you bring the PVC pipe closer to it, the PS globules will stick together more and more. When you bring your hand closer, it repels and separates because it is positively charged.
Experiment 3: Rolling aluminum cans
you need : Aluminum cans, PVC pipes, tissues
When the charged PVC pipe is brought closer to the metal, the free electrons in the metal move. A positive charge remains on the PVC pipe side and is attracted. It is called electrostatic induction.
Experiment 4: Electrostatic bell
you need : Aluminum cans, PVC pipes, tissues, drawing paper
Place two aluminum cans side by side and hang a picture between them. Peel off the paint on the part where the painting hits the can.
The electrons in the PVC pipe move to the aluminum can. The charged aluminum can electrostatically induces the image. The electrostatically induced image is attracted, hits the can, and receives electrons from the aluminum can. Since it was charged to the same negative value, it repels and hits the can on the other side, passing electrons. Repeat this. The rightmost electrostatic motor has the same principle.
Experiment 5: You know Leiden bottle
you need : Aluminum foil, plastic cup 2, PVC pipe
Stack plastic cups with aluminum foil wrapped on the outside. Attach the tongue of aluminum foil so that it touches the inner aluminum. Move the charged PVC pipe vertically just as if it were a tongue. (To send a lot of electrons.) After doing it about 10 times, the students hold hands and make a ring. The first person holds the bottle in one hand and the last person brings his index finger closer to the tongue. Everyone gets an electric shock.
