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  • HD

    Could anti-lock brakes detect a flat?

    By using a computer to monitor the rotation of the ...

    By using a computer to monitor the rotation of the car's wheels, an anti-lock braking system helps drivers avoid skids. Could this computer also monitor flat tires? Check out this HowStuffWorks podcast to learn more about brake systems.

    Sep 29, 2008 Read more
  • HD

    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 ...

    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 HowStuffWorks article to learn why appliance cords are shaped this way.

    Sep 26, 2008 Read more
  • HD

    What is a decibel, and how is it measured?

    The decibel unit is used to measure the intensity of ...

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

    Sep 24, 2008 Read more
  • HD

    How Gun Silencers Work

    The sound of gunfire is incredibly loud, and it is ...

    The sound of gunfire is incredibly loud, and it is amazing that anything is able to silence a firearm. However, the principle behind a gun silencer is surprisingly simple. Check out our HowStuffWorks article to learn more about silencers.

    Sep 22, 2008 Read more
  • HD

    How Heart Bypass Operations Work

    Since the heart is a muscle, it relies on the ...

    Since the heart is a muscle, it relies on the oxygen and nutrients contained in blood. This blood is supplied by arteries on the exterior of the heart -- when these arteries are blocked, a heart attack results. Take a look at our HowStuffWorks article to

    Sep 19, 2008 Read more
  • HD

    How much does it cost to run an electric blanket?

    The electric company bills its customer by the kilowatt-hour. The ...

    The electric company bills its customer by the kilowatt-hour. The number of watts a device uses times the number of hours you leave it on tells you number of watt-hours it consumes, and divided by 1,000 will convert the measurement to kilowatt-hours. Chec

    Sep 17, 2008 Read more
  • HD

    How do Pop Rocks candy work?

    Hard candy (like a lollypop or a Jolly Rancher) is ...

    Hard candy (like a lollypop or a Jolly Rancher) is made from sugar, corn syrup, water and flavoring. Check out our HowStuffWorks article to learn how conventional candy is combined with carbon dioxide to produce Pop Rocks.

    Sep 15, 2008 Read more
  • HD

    What is the difference between jelly jam and preserves? And What is Jello?

    Jam, jelly, and preserves are all made from fruit mixed ...

    Jam, jelly, and preserves are all made from fruit mixed with sugar and pectin. Jell-O, on the other hand, is completely different. Take a look at our HowStuffWorks article to learn more.

    Sep 12, 2008 Read more
  • HD

    How does gravity assist with interplanetary satellites?

    The idea behind a gravity assist is to use a ...

    The idea behind a gravity assist is to use a planet's motion to accelerate a satellite. Check out our article on HowStuffWorks to learn more about the effects of gravity on satellites.

    Sep 10, 2008 Read more
  • HD

    How children from the same parents look so different?

    Every person has a set of chromosomes, or coiled strands ...

    Every person has a set of chromosomes, or coiled strands of DNA. Check out this HowStuffWorks podcast to learn how chromosomes combine to promote variation from one generation to the next.

    Sep 8, 2008 Read more
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