Magnets are used in all kinds of applications, but do you ever wonder exactly why it sticks to certain metals? Find out the answer to this and other questions as we explore exactly how magnets work. See more »

The magnets found in an MRI machine are incredibly powerful. It can pull a stethoscope right out of a doctor's lab coat. So what would happen if you forgot to take out an earring? Ouch! See more »

Compass, in navigation, an instrument used to indicate directions. It ranks as one of the most important inventions ever made. See more »

Electromagnet, a device that has magnetic properties only when an electric current is applied to it. See more »

You need to make a magnet stronger, but you’re not sure how to do it. Learn about how to make a magnet stronger in this article. See more »

Make an electromagnet and show your children how fun science can be. Learn about how to make an electromagnet in this article. See more »

Magnetism. The most familiar form of the physical phenomenon called magnetism is the ability of certain objects to attract iron. See more »

Dip (or Dipping)Needle, an instrument used to measure the earth's magnetism and to detect underground magnetic materials. See more »

Electromagnetism, the science that deals with the phenomena that result from the relationship between electricity and magnetism. See more »

Magneto, an alternating-current generator that contains a permanent magnet. A magneto, unlike a generator that contains an electromagnet, requires no source of direct current for its operation. See more »