The magnet is not invented by man, but a natural magnetic material. Ancient Greeks and Chinese found a natural magnetized stone in nature It is called "magnet". This kind of stone can magically suck up small pieces of iron and always point in the same direction after swinging at rando...
Explore the interactions between a compass and bar magnet. Discover how you can use a battery and wire to make a magnet! Can you make it a stronger magnet? Can you make …
Pyrrhotite is the second most common magnetic mineral. It can easily be identified by its magnetic properties, lower hardness, and bronze color. Lodestone: A specimen of …
Магнетит – минерал рудного происхождения, принадлежащий химическому классу оксидов. Если точнее это смесь оксидов железа (Fe3o4). Нередко его называют магнитным железняком. Существует ...