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How a Theremin Works

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A theremin is an instrument you can play without touching. Learn how a theremin works and the history of the theremin at HowStuffWorks.

How Surround Sound Works

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Learn about surround sound technology, get buying tips, read sound system reviews and compare prices and features on popular system models.

How Induction Cooktops Work

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If you're looking for a way to modernize your kitchen, you may be considering induction cooktops. Learn about induction cooktops.

What's Really Going on at the 'Tesla Tower'?

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There's a mysterious tower in Texas that strongly resembles Nikola Tesla's Wardenclyffe Tower. Its constructors say they're testing some new forms of electromagnetic waves. But is something else going on?

Can Scientists Create a Star on Earth?

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Stars are enormous celestial bodies hot enough to register millions of degrees. They're fascinating scientific phenomena, but is it actually possible for scientists to create them?

Do gold-plated radiation-protection stickers work?

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Do gold-plated radiation-protection stickers work? Find out more about gold-plated radiation-protection stickers at HowStuffWorks.

How Atom Smashers Work

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Atom smashers are used to help us discover what matter is made of. Learn about atom smashers and find out how an atom smasher works.

How Light Works

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Some of the brightest minds in history have focused their intellects on the subject of light. Einstein even tried to imagine riding on a beam of light. We won't get that crazy, but we will shine a light on everything scientists have found so far.

How do the streetlights turn on automatically at night?

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On the Flintstones, a small bird sits inside the light and turns it on every night before he goes to bed. In a modern streetlight, a small circuit replaces the bird.

How Electricity Works

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Electricity surrounds us and can be used thousands of different ways. Learn about the basics of electricity, from generators and electrical circuits to voltage and currents.

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