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Does More Blades Mean a Better Razor?
health.howstuffworks.com/skin-care/beauty/hair-removal/how-many-blades.htm
How many blades are on your razor? Does it matter? Learn whether how many blades your razor features is important or not.
How Helicopters Work
science.howstuffworks.com/transport/flight/modern/helicopter.htm
Believe it or not, the marvel we know as the helicopter began as a Chinese top consisting of a shaft - a stick - adorned with feathers on one end.
Is there really a face on Mars?
science.howstuffworks.com/face-on-mars.htm
The face on Mars stunned observers in the 1970s. Learn if this formation is the colossus of a human face or simply an interesting rock formation.
How to Troubleshoot a Forced-Air Distribution System
A forced-air distribution system is just what the name implies. Air is forced from the furnace through ducts to registers in various rooms. Learn to troubleshoot a forced-air distribution system.
5 Things You Didn't Know About the Spring Equinox
science.howstuffworks.com/environmental/earth/5-things-didnt-know-about-spring-equinox.htm
The spring, or vernal, equinox traditionally marks the first day of spring - but climate scientists use a different date altogether. Find out more about this and other facts about the spring equinox.
Differences Between Rational and Irrational Numbers
science.howstuffworks.com/math-concepts/rational-vs-irrational-numbers.htm
Rational numbers can be expressed as the ratio of two integers, while irrational numbers, such as square roots of non-square numbers, cannot.
12 Types of Windows for Your Home or Office Building
home.howstuffworks.com/home-decor/decorating-styles-techniques/types-of-windows.htm
Different types of windows do a lot more than let us see outside. They brighten up rooms, bring in fresh air and help regulate temperature.
What kind of drill bits do I need for wood?
home.howstuffworks.com/drill-bit-wood.htm
Woodwork requires special drill bits for hard and soft wood. Learn what kind of drill bits you need for wood in this article.
How Washing Machines Work
home.howstuffworks.com/washer.htm
A washing machine is actually an amazing device once you get inside. Learn about the agitator, the pumps, the controller and much more!
How PlayStation Works
electronics.howstuffworks.com/playstation.htm
The PlayStation is one of the most popular video game systems of all time, with millions of users around the world! Learn where it all started and what's inside!