Manufacturers selling cylindrical magnet magnetic magnets magnet N45H

 Magnet scientific name of magnets is a magnet. Magnet is pressed with iron oxide powder plus filler and binder. Some magnet magnetic strong, including multi-Fe3O4, some containing little weak magnetic Fe3O4. Substances are mostly composed of molecules, molecules are made of atoms, atomic nuclei and electrons in turn. In atomic internal, electronic constantly rotation, and rotation around the nucleus. Both the electron motion will produce magnetism. However, in most substances, the direction of electron motion vary, disorganized, magnetic effects cancel each other. Thus, most of the substances under normal circumstances, does not exhibit magnetism. Iron, cobalt, nickel or ferrite ferromagnetic substances differ electron spin inside it can spontaneously lined up in a small area, forming a spontaneous magnetization area, this area is called the spontaneous magnetization of the magnetic domains. Magnetization of ferromagnetic substances, the internal magnetic domains neatly lined up consistently direction, the magnetic strengthened constitute a magnet. Magnet iron absorption process is the process of magnetization of iron, between magnetized iron and magnets of different polarity to generate attractive iron magnet to firmly "stick" together. We say that a magnet has a magnetic. Magnet can suck iron, nickel, cobalt and other metals, commonly known as a magnet. Can be divided into general common permanent magnet, and when the energization of the electromagnet have magnetism. If a magnet made of rod-like or needle-like and hang up, it is natural to point to the Earth's South Pole and North Pole. Divided into large and small magnet magnet magnet. Large magnet magnet is so widely used, the use of electromagnets, made transporting steel crane. Energized after a powerful magnetic magnet, so can suck heavy steel. As long as you drop off the power to the steel. Small and large magnet magnet contrast, the compass is both small and light, but also a lot of weak magnetism. Compass is not the role of iron absorption, but rather reflect the Earth's magnetism. Magnets attract iron, cobalt, nickel and other substances known as magnetic properties. Magnet magnetic pole at both ends of the strong area is called one end of the Arctic (N pole), one end of the south pole (S pole). Experiments show that the same magnetic poles repel each other, opposite poles attract each other. Many iron having two opposite poles of the primary magnet, in the absence of magnetic field, these original disordered magnets, they cancel each other's magnetic, external magnetism is not displayed. When the iron close to the magnet, the former under the action of the magnets of the magnet, neatly lined up, so that one end of the magnet close to the magnet having a polarity opposite to and attract each other. This shows that the presence of the original iron magnet can be magnetized by a magnet. And copper, aluminum and other metals is not the original magnet structure, it can not be attracted by a magnet.