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Is it possible to generate electricity directly from heat?

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Generating electricity from heat is explained in this article. Learn about generating electricity from heat.

How Solenoids Work

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You use solenoids every day without ever knowing it. So what exactly are they and how do they work?

Owning an Old House: Charming Love Affair or Expensive Money Pit?

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Old houses have an undeniable charm, but there are inherent issues that can turn an older property into an emotional and financial nightmare for an owner. Knowing what to watch for can be the key.

How Underground Pet Fences Work

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Want to keep your dog out of the neighbor's yard but feeling guilty pulling out a leash? You might consider an underground or wireless pet fence. Learn how these fascinating systems work and why this specialized fencing industry is booming.

Is it possible to fix a blown fuse with a chewing gum wrapper?

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If you could fix a fuse with only a stick of foil-wrapped gum, would you do it? Learn how to fix a fuse and why a gum wrapper may not be the best bet.

How are voltage surges and spikes different?

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What happens when there's too much voltage? Learn about the difference between voltage surges and spikes from this article.

Are premium audio cables worth the investment?

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The sales guy says you need premium audio cables if you want premium sound. Are premium audio cables worth the investment?

How do I know which cables to use?

electronics.howstuffworks.com/how-to-tech/cables-to-use.htm

Which cable to use? It really depends on what components you plan to connect and what quality you expect. Learn how to choose which cable to use.

Potato Battery Experiment: Powering a Light Bulb With a Potato

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You want to make a potato powered light bulb, but you're not sure how to do it. Learn about how to make a potato powered light bulb in this article.

What Is the Difference Between Two- and Three-pronged Plugs?

electronics.howstuffworks.com/everyday-tech/question110.htm

Some appliances use three prongs to connect to an outlet, while others only use two. Learn the difference between two- and three-pronged plugs.

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