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How Amplifiers Work

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It may seem like an audio add-on, but without an amplifier, you'd never be able to hear the music on your CDs (your neighbors might be happier, but would you?). Find out how amps pump it up to 11.

How Hand-powered Generators Work

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Hand-powered generators are great travel gadgets. Learn more about hand-powered generators at HowStuffWorks.

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 does a CB radio antenna work?

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How does a CB radio antenna work? Why does it have to be tuned? How do you tune it properly?

How Mug Warmers Work

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Mug warmers are great kitchen gadgets to have in the house. Learn more about mug warmers at HowStuffWorks.

How Joysticks Work

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Video games are amazing creations, but the fact remains -- if you can't input, you can't play. Take a look inside the quintessential game controller and see how it has evolved over the years.

How Nanogenerators Work

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Nanogenerators can harness kinetic energy to power implanted medical devices, smartphones and other small personal electronics. See how nanogenerators work.

How Capacitors Work

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The capacitor plays a crucial role in electronics - the capacitor stores electrons for when they're needed most. Learn more about the capacitor.

What's the difference between quartz and liquid crystal?

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You may have heard about quartz and liquid crystal in reference to watches, but do you know what the difference is between quartz and liquid crystal?

How Light Emitting Diodes (LEDs) Work

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Light emitting diodes form numbers on digital clocks, send data from remote controls and illuminate watches - the simple genius of the design makes it infinitely applicable. And now, LEDs are affordable.

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