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5 Ideas for Experiments on Conserving Energy

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About 70 percent of our energy comes from non-renewable sources like oil and natural gas. When they're gone, they're gone for good. Learn some simple ways to conserve energy through these five simple experiments.

How Telephones Work

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Telephones are one of the most important and useful modern inventions. Learn about telephone operation, creating a telephone network and tones and bandwidth.

How to Use a Multimeter

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A volt-ohm-milliammeter, or VOM, is typically used for more serious electrical troubleshooting and repairs. Find out why to add a VOM to your toolkit.

1989 Pontiac Firebird 20th Anniversary Trans Am

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The Trans Am had its 20th birthday in 1989, and the anniversary edition was the sleekest and most powerful model to date. See the details here.

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.

Can You Answer All of These Questions an Electrician Should Know?

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Are you an electrician, or thinking about becoming one? Do you know all there is to know about fuses, circuits, currents and more? If so, challenge yourself against our quiz on all things electrician!

How to Repair a Refrigerator

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A refrigerator is one of the few appliances that runs continuously, day or night, keeping your food cold. Learn how to repair a refrigerator.

How Much Do You Know About Ceramics?

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Ceramics have been around for most of human history, but there's much about it that you probably don't know. In this quiz, we'll test your knowledge of all things ceramic. By the end, you'll be ready to reenact that hot scene from the movie "Ghost"!

Electric Car Quiz

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They may look similar from the outside. But there are many significant under-the-hood differences between an electric-powered car and a car that makes use of an internal combustion engine. How much do you know about electric cars?

How Inductors Work

electronics.howstuffworks.com/inductor.htm

An inductor is little more than a coil of wire. Sound simple? Well, it is -- but that coil of wire can do some pretty cool things! Learn all about inductors!

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