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How Faraday Cages Work

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Thanks to the Faraday cage, we can control electricity and make it safer for our computers, cars and other inventions.

How Wireless Speakers Work

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Wireless speakers can eliminate some of those pesky audio cables. While they do have advantages, wireless speakers also come with some strings attached.

How Tape Recorders Work

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Magnetic recording is the backbone of the electronics revolution. Learn how this analog technology lets you store and erase data!

How Do Wireless Chargers Work?

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Although we love our mobile gadgetry, all those charging cords are annoying to keep up with and carry around. Does it ever make you wonder, how do wireless chargers work? Find out how wireless chargers ditch the cables and power up your gear!

How Speakers Work

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The best amplifier, receiver and CD player won't do you much good, if you don't have good speakers. Speakers are the final step in the stereo process -- the key component that turns electronic data into sound.

Inside an Electric Toaster

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Ever wonder what's inside your electric toaster? We've taken apart one for you to see, so take a look at these electric toaster pictures to get started.

Is Light Matter and Does It Weigh Anything?

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Seven ounces a ray! No, that's a lie. Measuring the weight of light is not as straightforward as that. So what's the more complicated explanation?

How Cell-phone Radiation Works

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Cell-phone radiation has been debated for years now. Find out what the buzz is about and how to protect yourself when choosing and using a cell phone.

How does a magneto work?

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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?

How Rail Guns Work

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Rail guns leave gunpowder-based weapons in the dust (one can hit a target 250 miles away in six minutes). So why isn't the military using them? Find out how rail guns can be used and learn about the limitations of this technology.

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