DEVICES

Ever wondered how that thing works? Explore the inner workings of many common devices and inventions, as well as those that aren't so common, such as compasses, gyroscopes and bug zappers.
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How BrainPort Works

Learn all about BrainPort, a device for sensory substitution by electrotactile stimulation.

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  • What's a "thinking cap" -- and could it make me a genius?

    What's a "thinking cap" -- and could it make me a genius?

    You've probably been asked to put on your thinking cap before, but have you ever wondered what it looked like or what it does? This thinking cap may not make you smarter, but it could help you tap into previously unexplored abilities. See more »

  • What's a Cybathlon?

    What's a Cybathlon?

    This is not your grandma's Olympics, and these are definitely not her prosthetics. Get ready for the Cybathlon in 2016. The technology for this competition is going to blow you away. See more »

  • What's the difference between backscatter machines and millimeter wave scanners?

    What's the difference between backscatter machines and millimeter wave scanners?

    Nope, these advanced imaging technologies are not the same. So whether you're concerned about privacy, safety or time as you're shuffling through the airport security line, we can tell you how these two types of scanners stack up against each other. See more »

  • Why are lobsters being used in new X-ray technologies?

    Why are lobsters being used in new X-ray technologies?

    Lobsters have one of the animal world's most unique vision systems. Researchers hope to apply that system to scanners that will make steel walls transparent. See more »

  • Why isn't the U.S. on the metric system?

    Why isn't the U.S. on the metric system?

    You may think of the U.S., Liberia and Myanmar as the sad-sack metric losers. The truth, however, is a little more complicated -- sort of like remembering how to switch between pounds and kilograms. See more »

  • Can bug zappers help transmit diseases?

    Can bug zappers help transmit diseases?

    I've heard that bug zappers can actually help transmit diseases -- how does that happen? Once the mosquito dies, how can a disease it was carrying be transmitted? See more »

  • How can I make my own battery to win a contest at school?

    How can I make my own battery to win a contest at school?

    I am entering a chemistry contest at my high school. The goal is to build the battery that produces the most watts for one minute. Our battery can't be bigger then 1 foot in any direction and can't use strong acids. What are the best chemicals to use, and what's the best design? See more »

  • How do fans make you feel cooler?

    How do fans make you feel cooler?

    Why does air cool down when pushed around by an electric fan? You would think that air molecules in motion would be creating friction, and therefore increasing the ambient temperature instead of decreasing it. So why do you feel cooler? See more »

  • How does a magneto work?

    How does a magneto work?

    I am curious about the ignition system in my lawn mower. I know that a spark plug creates a high-voltage spark, and I know in my car the electricity for the spark comes from the battery. My lawn mower doesn't have a battery, so where does the electricty come from? See more »

  • How Hoverboards Will Work

    How Hoverboards Will Work

    See "Back to the Future 2"? Drool much over those hoverboards? Find out how these devices will work and see one that already does! See more »

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