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How Does a Breathalyzer Work?
electronics.howstuffworks.com/gadgets/automotive/breathalyzer.htm
A roadside sobriety test of touching one's nose or walking a straight line cannot rule out a high blood alcohol concentration. That's why the Breathalyzer is such a game-changer. But how does a Breathalyzer work? Read on to find out!
How Gas Turbine Engines Work
science.howstuffworks.com/transport/flight/modern/turbine.htm
Turbine engines, or jet engines, have revolutionized the air travel industry. Learn about turbine engines and how turbine engines work.
How Does a Gas Pump Know When to Stop?
auto.howstuffworks.com/fuel-efficiency/fuel-consumption/gas-pump-full-tank.htm
The days of spilling gasoline all over our shoes are pretty much over. But it begs the question: How does a gas pump know when to stop? Read this simple explanation of the mechanics that cause a gas pump to shut off when the tank is full.
What Is Resonance?
science.howstuffworks.com/resonance-info.htm
An object free to vibrate tends to do so at a specific rate called the object's natural, or resonant, frequency.
Quantum Physics Pictures
science.howstuffworks.com/science-vs-myth/everyday-myths/quantum-physics-pictures.htm
Our quantum physics pictures show this field will change the world. Explore these quantum physics photos at HowStuffWorks.
How Many Muslim Countries Are in the World?
people.howstuffworks.com/how-many-muslim-countries-in-the-world.htm
Islam is one of the world's largest religions, practiced by over 1.9 billion people across the globe — that's nearly a quarter of the world population. The world's Muslims are spread out across the globe, but the largest Muslim population is in the Middle East and other surrounding regions.
How Airplanes Work
science.howstuffworks.com/transport/flight/modern/airplanes.htm
More than 100 years ago the Wright brothers made their historic first flight in Kitty Hawk, N.C. Even after all these years, their creation still boggles the mind: How can something so heavy take to the air?
How Newton's Cradles Work
science.howstuffworks.com/innovation/inventions/newtons-cradle.htm
Five metallic balls on slender threads sit side by side. As one on the end hits the rest, the one on the opposite end rises and falls. Why don't the balls in the middle move? It's complicated.
Fun Physics Activities for Kids
lifestyle.howstuffworks.com/crafts/seasonal/fun-physics-activities-for-kids.htm
Fun Physics Activities for Kids teach physics basics to future Einsteins using ordinary playground equipment. Learn fun physics activities for kids.
How Air-Conditioned Seats Work
auto.howstuffworks.com/air-conditioned-seat.htm
Have you ever been in a car with air-conditioned seats? Read about air-conditioned seats at HowStuffWorks.