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How to Maintain a Furnace

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Heating systems are usually trouble-free and easy to maintain. Efficient operation is a function of good maintenance. Learn how to maintain a furnace.

How OLEDs Work

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OLEDs are a type of light emitting diode that is made of thin films of organic molecules. Learn about OLEDs and how OLEDs will be used in televisions.

How Wireless Power Works

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Unless you are particularly organized and good with tie wrap, you probably have a few dusty power cord tangles around your home. Find out how methods of wireless power transmission could cut the clutter or lead to clean sources of electricity.

How Aluminum Works

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Aluminum is used in many products, from pots and pans to light bulbs and power lines. Learn how aluminum went undiscovered for so long.

How Christmas Works

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Christmas is celebrated by hundreds of millions of people around the world each year. But what do presents, three wise men and Jesus have to do with each other anyway?

How the Amish Work

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The Amish are an intriguing, somewhat mysterious people. In this electronic-crazy age, can they really avoid using electricity? Learn about the Amish.

Continuity Tester

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A continuity tester is an easy-to-use electrical tool that will help you pinpoint problems in wires or components. Learn about continuity testers.

How Laser Communication Works

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When speed is everything and light marks the universe's speed limit, lasers are bound to be the answer. At least, that's what NASA and a bunch of Wall Street types are betting on.

How does the lighter in a BBQ grill work?

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A BBQ lighter uses something called piezoelectricity to generate a nice spark that lights the grill. Learn how the lighter in a BBQ works.

Planetarium

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Planetarium, is an educational device for showing the locations and movements of the planets and other objects in the universe.

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