I believe many people still remember when they were in high school，In physics class, the teacher taught us how magnets work，Although most of them have forgotten，But if when you see what this foreign netizen does with magnets，You will definitely be surprised。when he put a magnet inside a copper pipe，What happened was so miraculous。。
▲ First he brought a large magnet and a copper pipe made of pure copper，Then drop the magnet into the copper tube。
▲ When the magnet enters the copper tube，A miraculous scene happened，The magnet did not fall directly on the table but was suspended in the air！
▲ Then the netizen tilted the copper pipe，I found that the magnet is still slowly passing through the copper pipe！
▲ even if he flipped the copper pipe over，The magnet inside did not fall on the table, but kept floating and moving inside.。It's really amazing，In fact, the copper tube is equivalent to a dense closed coil，There is reluctance when the magnet passes through。i.e. the coil generates current when the magnet passes through it，The current in turn generates a reverse magnetic field in the coil，Therefore, when the magnet passes through, it will always be suspended in the copper tube.。It's amazing to see this，Hurry up and share the article to let more people know about it。。
