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What is a decibel, and how is it measured?

The decibel unit is used to measure the intensity of a sounds. Check out our HowStuffWorks article to learn more about the decibel scale.

May 22, 2015 | 2 min

Why do the plugs on some appliances have two prongs and others have three?

When you look at a normal 120-volt outlet in the United States, there are two vertical slots and then a round hole centered below. Take a look at this... Read more

May 20, 2015 | 2 min

How do sodium acetate heat pads work?

Sodium acetate heat pads start out as a pouch of liquid and crystallize into a warm solid. Explore the fascinating chemistry that makes these heat pad... Read more

May 18, 2015 | 2 min

How do they create patterns in a baseball field?

Groundskeepers at baseball fields create patterns using a process called lawn striping. Tune in to find out how this process works -- and how you can ... Read more

May 15, 2015 | 2 min

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