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How Plasma Cutters Work

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The metal used to construct buildings resists all sorts of damage, making it a very reliable material -- and very difficult to manipulate into the appropriate form. Enter the plasma cutter. Learn all about the amazing device that cuts through metal like a knife through warm butter.

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.

What is the difference between a fluorescent light and a neon light?

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Have you ever wondered what the difference is between a fluorescent light and a neon light? We'll explain both technologies in this article.

How Soil Lamps Work

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Soil lamps are discussed in this article from HowStuffWorks. Learn about soil lamps.

Gadget Savvy: Batteries Quiz

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You can find batteries under the hood of your car, inside a TV remote -- even within hearing aids. Batteries were invented nearly two centuries ago, and they keep getting more sophisticated. But how well do you know what's at work inside these cans of chemicals?

How Camera Flashes Work

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A camera flash seems like a pretty basic device, but there's actually some interesting circuitry at work. Find out how a flash charges up and see exactly what happens the instant it goes off.

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.

How Flash Memory Works

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Flash memory is a compact, flexible type of storage. Learn about types of flash memory, removable flash memory and uses of flash memory.

How Thin-film Solar Cells Work

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Thin-film solar cells are more flexible and less expensive than traditional solar cells. Learn more about what makes thin-film solar cells different.

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