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Magnetic Product
The magnet is not invented, natural magnetite, first discovered and the use of magnets should be
Chinese. Therefore, the "compass" is one of the four great inventions of the Chinese people.
As for the component that is iron, cobalt, nickel, etc., with the special structure of atoms, atomic
itself with magnetic moment. General confusion with these mineral elements. Magnetic zones on
magnetic affecting each other .. but outside (such as magnetic field) guided elements consistent with
the direction of trend on the show .. Magnetic. also known as magnets. Fe, Co and Ni is the most
commonly
used magnetic material is basically permanent magnets and magnet-soft iron permanent magnet is
coupled with strongly magnetic material so that the spin magnetic and electronic Kok with momentum
into fixed direction is coupled with soft magnetic current (also a plus magnetic method), and other
current iron will gradually removed soft magnetic As for the loss of the first magnet who discovered
the oldest documented Chinese Yellow Emperor is a guide to war so Chiyou as one of China's four great
inventions! China in a century BC magnet polarization that is aware of the situation. Warring States
era, he used a natural magnet, on a scale of, used for divination. Two methods used by the Northern
Song Dynasty create artificial magnet, a kind of iron is hot needles placed in the North-South
direction, rapid cooling, the use of the Earth's magnetic field will be magnetized iron pin; another
magnet is used iron needle from friction. "Meng Xi Bi Tan," documented the existence of magnetic
declination, found under the influence of magnetic declination, the compass needle pointing south,
than the SouthEast genuine. Based on this knowledge, and will be developed as a compass magnet for
scientific applications. Magnet is a generic term that generally refers to a magnetic things, the
actual composition may not necessarily contain iron. Pure metal than the state itself without
permanent magnetic iron, only near the permanent magnet will have a magnetic induction. A permanent
magnet inside the general increase in other impurity elements (such as carbon) to make magnetic
stabilized, but it would reduce the freedom of electronic conductivity and difficult, so when the
current through the lamp-up. Rail is a common zone of magnetic elements, but many other elements have
a stronger magnetic, like many powerful magnet Rubidium is a mixture of iron boron.
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