We can distinguish a nickel coin from a steel one through a chemical reaction: • Monedas Ferromagnética...
It is also possible to do it because the physical property named Curie temperature or Curie point. At this temperature, ferromagnetic materials lose their magnetism. Because Curie point of steel is much higher that that of Nickel, it is possible to differentiate them heating them up and approaching a magnet.
en.wikipedia.org/wiki/Curie_t...
en.wikipedia.org/wiki/Ferroma...
en.wikipedia.org/wiki/Nickel
en.wikipedia.org/wiki/Steel
en.wikipedia.org/wiki/Iron
en.wikipedia.org/wiki/Magnetism
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15 май 2016
