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How GMs Hy-wire Works
auto.howstuffworks.com/hy-wire.htm
What's a car without an engine? A GM Hy-wire. There's no combustion, no linkages, and it has driver controls that work like a video-game joystick. See what you could be driving in the future.
How Digital Scales Work
electronics.howstuffworks.com/gadgets/fitness/digital-scale.htm
Digital scales are common measuring devices that harness several physical laws. Learn how digital scales weigh everything from peanuts to penguins.
Have You Noticed That Your Car Makes Noise in Reverse?
auto.howstuffworks.com/question522.htm
Manual transmissions use mostly helical gears, but reverse is a special situation that requires a different type of gear -- a spur gear. Learn why a spur gear makes a loud whirring noise when the car's in reverse.
Can steel wool catch fire?
home.howstuffworks.com/steel-wool-catch-fire.htm
Steel wool can catch fire easily, even when wet. Learn whether steel wool can catch fire in this article.
How Yo-Yos Work
entertainment.howstuffworks.com/yo-yo.htm
Yo-yos can be traced back at least 2,500 years. It's a toy with true staying power, and it has lately gone high-tech -- ever heard of a yo-yo with a clutch? Learn about yo-yo physics, yo-yo tricks, yo-yo history and some serious upgrades in yo-yo design.
How Differentials Work
auto.howstuffworks.com/differential.htm
Differentials let cars make turns with ease. Find out how the differential allows the wheels to rotate at different speeds.
5 Ways to Improve Engine Response
auto.howstuffworks.com/5-ways-to-improve-engine-response.htm
Quick engine response is important no matter whether you drive a big truck or a little compact. Read about 5 ways to improve your car's engine response.
How Toasters Work
home.howstuffworks.com/toaster.htm
Ever wonder how a toaster knows when something is done? Does it pop it up regardless? Does it really care if you pick "Light" or "Medium" or "Dark"?
How All-in-One Recycling Systems Work
electronics.howstuffworks.com/gadgets/kitchen/all-in-one-recycling-systems.htm
All-in-One Recycling Systems are great kitchen gadgets. Learn more about All-in-One Recycling Systems at HowStuffWorks.
What grade of steel was used in the World Trade Center?
science.howstuffworks.com/engineering/structural/grade-of-steel-used-in-world-trade-center.htm
The materials used to build the World Trade Center's twin towers have been heavily scrutinized since the 9/11 terrorist attacks -- including the steel that formed the frames of the skyscrapers.