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How X-rays Work

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X-ray machines seem to do the impossible: They see straight through clothing, flesh and even metal, thanks to some very cool scientific principles at work. Find out how X-ray machines see straight to your bones.

What's the Difference Between Covalent and Ionic Bonds?

science.howstuffworks.com/difference-covalent-ionic-bonds.htm

Covalent bonds form between two similar non-metals. Ionic bonds exist between metals and non-metals. HowStuffWoks explains ionic and covalent bonds.

How Radon Works

home.howstuffworks.com/home-improvement/household-safety/radon.htm

In places where uranium is common in the soil, radon is a popular topic of discussion. Even though radon is "completely natural," it can be a real health hazard. Learn how radon forms and why it is so dangerous.

How Fluorescent Lamps Work

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You see fluorescent lighting all over the place -- in offices, homes, stores, dressing rooms. But there's a certain mystery to it. Find out what's going on inside these glowing tubes!

Can we plug the hole in the ozone layer?

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Plugging the hole in the ozone layer is explained in this article. Learn about plugging the hole in the ozone layer.

How Plasma Displays Work

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Flat-panel plasma displays are quickly surpassing bulky CRTs in terms of sales. Learn about plasma technology.

Why is sugar sticky?

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Sugar becomes sticky when mixed with water. But why? Find out why sugar is sticky at HowStuffWorks.

How Nuclear Fusion Reactors Work

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Fusion reactors will use abundant sources of fuel, will not leak radiation above normal background levels, and will produce less radioactive waste than current fission reactors. Learn about this promising power source.

Can You Pass This Periodic Table Trivia Quiz?

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Let's take a trip back to high school chemistry class! Do you remember all those fun things you were taught about the periodic table? Jog your memory with this quiz, and we'll tell you how much knowledge your big brain managed to retain.

How Light Sticks Work

science.howstuffworks.com/innovation/everyday-innovations/light-stick.htm

Light sticks produce a mesmerizing neon glow before slowly extinguishing. Learn about light sticks, chemical light sticks and how they work.

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