Joke Collection Website - Cold jokes - Can magnetism attract gold and silver? Can you attract gold and silver with the attraction of magnets?
Can magnetism attract gold and silver? Can you attract gold and silver with the attraction of magnets?
Magnets Magnets are made up of atoms such as iron, cobalt and nickel. And their atoms have special internal structures and have magnetic moments themselves. Magnets can generate magnetic fields and attract ferromagnetic substances, such as iron, nickel, cobalt and other metals.
History of magnet research
As to whether magnets can attract other metals, our ancestors made many attempts and found that magnets can attract not only metals such as gold, silver and copper, but also bricks and tiles. During the Western Han Dynasty, people realized that magnets could only attract iron, but not other objects. When two magnets are put together and close to each other, sometimes they attract each other and sometimes they repel each other. As we all know, a magnet has two poles, one is called N pole and the other is called S pole. Like-sex repulsion, opposites attract. People didn't know this truth at that time, but they could still perceive this phenomenon.
explain
Magnets can attract iron because they can rearrange the electrons in iron to form a principle similar to electromagnets, so they can attract each other. There is a magnetic field around the magnet. In a magnetic field, some substances that are not magnetic will become magnetic, which is called magnetization. For example, iron can be magnetized into a "new magnet" in a magnetic field. Magnets are polar, like charges repel and opposite charges attract. When iron is magnetized, the N pole of the "new magnet" is opposite to the S pole of the original magnet, so the magnet can attract iron. In fact, magnets don't just attract iron. Anything that can be magnetized, such as iron, nickel, cobalt and their alloys, can be attracted by magnets. However, some substances, such as gold and silver, cannot be attracted by magnets unless they have the property of being magnetized.
reference data
Baidu encyclopedia: /item/ magnet /83290? Fr = Aladdin
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