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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 moreSUPERCONDUCTIVITY 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 moreAN MRI MACHINE Come peek inside one of these amazing machines — and learn how they help doctors peek inside their patients. Read moreCRYOGENICS Samuel Taylor Coleridge lends a hand as we explore cryogenics — the art and science of how to get things fantastically frigid. Read moreMASS 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