Magnetic fields surround magnets and act like invisible shields. Every magnet, from the smallest refrigerator magnet to powerful magnets that can pick up cars, has a magnetic field around it. Magnets always have two ends, or poles, and the lines of the magnetic field go from one pole to the other.
The Earth, too, is a giant magnet, which means our planet is always surrounded by a powerful and protective magnetic field. The field is layered and thick, so it looks something like a giant onion that surrounds the Earth (except it’s invisible). Earth’s magnetic field is easy to see in action ....Click Here to Read on...
Posted by Jay Roberts at 05:08 AM | Permalink