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What does the weight mean on a can of motor oil?
auto.howstuffworks.com/fuel-efficiency/fuel-consumption/question164.htm
Motor oil weight depends on viscosity and other factors. Learn how motor oil weight is determined in this article.
How the U.S. Draft Works
people.howstuffworks.com/us-draft.htm
While the U.S. has no draft currently, it does require military registration via the Selective Service System. What does that mean and what would happen if a draft was reinstated?
Only 20% of Adults Can Pass This 8th-Grade Math Test. Can You?
play.howstuffworks.com/quiz/only-20-adults-can-pass-this-8thgrade-math-test-can-you-learn
Calling all adults! It's probably been decades since you sat behind the desk in your 8th-grade math class, but we're willing to bet that some of that material is still in your brain! Do you remember slope intercept form? Does the name Pythagoras ring a bell? If it does, you're in the right place! Only 20% of adults can pass this 8th grade math test! Can you? Let's find out!
How Microcontrollers Work
electronics.howstuffworks.com/microcontroller.htm
Most modern electronic devices (TVs, VCRs, microwaves and so on) contain an embedded microcontroller. It's basically a dedicated computer. Find out how these devices work and experiment with one on your own.
Is 7/7/07 a lucky day?
people.howstuffworks.com/lucky-day.htm
July 7, 2007 is considered by many people to be one of the luckiest days of the century. Find out what the excitement surrounding 7/7/07 is all about.
Rummikub Rules You Can Understand
entertainment.howstuffworks.com/leisure/brain-games/rummikub-rules.htm
Rummikub is a game based on the card game rummy, but it's played with tiles. How do you play? We'll tell you how and what the Rummikub rules are.
What's the difference between torque and horsepower?
auto.howstuffworks.com/difference-between-torque-and-horsepower.htm
What's the difference between torque and horsepower? Read about what sets torque and horsepower apart, and how one affects the other.
What is computing power?
computer.howstuffworks.com/computing-power.htm
What is computing power exactly? And what makes one type of machine more powerful than another? Learn about computing power at HowStuffWorks.
Build Your MLB Dream Team, and We'll Guess How Old You Are
play.howstuffworks.com/quiz/build-your-mlb-dream-team-and-well-guess-how-old-you-are
Baseball is how Americans mark time. Every generation grows up with its heroes of the diamond, and every generation's idea of a dream team is distinct. Can we guess your age based on your MLB dream team?
How Slot Machines Work
entertainment.howstuffworks.com/slot-machine.htm
Slot machines are a popular form of gambling. Learn about modern slot machines and old mechanical models and find out the odds of winning on slot machines.