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It's Elementary: The Periodic Table Quiz

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The periodic table of elements was an important turning point in the history of the chemistry. Take HowStuffWorks' periodic table quiz to learn more.

How Camera Flashes Work

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A camera flash seems like a pretty basic device, but there's actually some interesting circuitry at work. Find out how a flash charges up and see exactly what happens the instant it goes off.

Does hydrogen destroy metals?

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Hydrogen sounds great as the energy of the future until the topic of hydrogen embrittlement arises. Can we stop hydrogen from destroying metals?

Will we ever have space ships parked in our garages?

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Will we ever have spaceships parked in our garages so that we can fly to the moon whenever we feel like it?

Time Is Up for the Leap Second

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The decision made at the 27th General Conference on Weights and Measures will scrap leap seconds for good by 2035.

What is activated charcoal and why is it used in filters?

science.howstuffworks.com/environmental/energy/question209.htm

Charcoal is carbon. Activated charcoal is charcoal that has been treated with oxygen to open up millions of tiny pores between the carbon atoms. What does this have to do with its absorbancy?

How the Sun Works

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The sun warms our planet every day, provides the light by which we see and is necessary for life on Earth. Learn about the sun.

How Laser Analysis Works

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Laser analysis is advancing everything from forensics and archaeology to health care and art history. Learn how laser analysis technology works.

How Light Works

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Some of the brightest minds in history have focused their intellects on the subject of light. Einstein even tried to imagine riding on a beam of light. We won't get that crazy, but we will shine a light on everything scientists have found so far.

How Nuclear Power Works

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On the one hand, nuclear power offers a clean energy alternative that decreases fossil fuel dependence. On the other, it summons images of quake-ruptured Japanese power plants leaking radioactive water. What happens in reactors in good times and bad?

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