MAGNETS: dede known antiquity, magnetite is an iron mineral that has magnetic properties.
MAGNETISM: It force produced by magnets and electric currents and acts on other materials such as iron.
call North Pole to the extremity of the magnet that is oriented to true north and south pole to the contrary. Grujula
A: is a magnet in the form of chapita that is oriented north freely.
These magnetic lines formed to sprinkle iron filings around the magnet, are magnetic field lines. The forces that magnets exert on each other is a different type of Attraction:
The earth has a core iron to make it behave like a big magnet. 
The Earth's magnetism is very important for life and protects us from the intense radiation (charged particles that spin at high speed) that comes from space and turns toward the polar auroras produced boreares. 
electromagnets.
early nineteenth century was discovered that electric current produces magnetism.
0 comments:
Post a Comment