Magnets have probably been in existence since time began on earth. In a 4th century, Chinese book there is a reference to lodestone, a rock that makes iron come to it. As science and technology progressed, uses and applications for magnets increased as well. As our world enters the 21st century, man has continued...
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Magnets are objects or materials which create an invisible field that attracts things made of ferromagnetic materials. The most common ferromagnetic substance is iron. In addition to attracting some materials, magnets can both attract and repel other magnets. Usually only solid objects can become magnetized, but a liquid containing tiny ferromagnetic particles can be...
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