A shrunken quarter (left) next to a full-size quarter.

The interplay of magnetic and electric forces can shrink a U.S. quarter to the size of a dime – in one millionth of a second.

Illustration of right and left hand rules.

When it comes to learning about electricity and magnetism, there's no better tools than your right and left hands. Read more.

MRI machine.

Magnetic Resonance Imaging machines are powered by strong superconducting magnets. Find out what makes them tick.

Arc lamp.

In 1876, Sir Humphry Davy saw light jump across a gap in a circuit. One of the first electrical lights, the arc light, was born.

What is...

  • A MAGNET

    If your knowledge of magnets ends with posting a to-do list on the fridge, add this to the list: Learn more about magnets!   Read more
  • SUPERCONDUCTIVITY

    They don't call it super for nothing. Once you get a superconductor going, it'll keep on ticking like the Energizer Bunny, only a lot longer.    Read more
  • AN MRI MACHINE

    Come peek inside one of these amazing machines — and learn how they help doctors peek inside their patients.   Read more
  • CRYOGENICS

    Samuel Taylor Coleridge lends a hand as we explore cryogenics — the art and science of how to get things fantastically frigid.    Read more
  • MASS SPECTROMETRY

    Not only do mass spectrometers accurately weigh molecules — they do it while those tiny particles are careening by faster than Jeff Gordon on steroids.    Read more

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Cook up a Comet

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