everyday science library

 

There's a lot of science at work in your daily life. Ever wonder how an aerosol can works or how light sticks work? Explore the science behind commonly used objects.

Featured Article:  How Zippers Work

Better than buttons? Maybe. Less time-consuming than laces? Definitely. As far as fastening mechanisms go, the zipper is a work of art. Learn exactly what makes up a zipper and how it all fits together so perfectly. See more »

How does a lava lamp work?

How does a lava lamp work?

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How does chlorine work to clean swimming pools?

How does chlorine work to clean swimming pools?

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How does silk-screening work?

I'm having T-shirts printed, and the people at the shop keep talking about "silk-screening." How does silk-screening work?

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My glasses have an anti-reflective coating. How does that work?

My glasses have an anti-reflective coating. How does that work?

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What does the filter on a cigarette do?

I have been smoking for 50 years and have always wondered why cigarettes have filter tips. I can remember when none of the cigarettes on the market had filters, and now nearly all of them do. Does the filter do anything?

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Why does Alka Seltzer fizz?

Yesterday you talked about hydrogen peroxide, and the day before you talked about Pop Rocks candy. Since we are talking about things that fizz, what about Alka Seltzer? How does it work and why does it fizz?

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Why is there a small hole on the top of spray-can lids?

There is a can of Pam in my kitchen that has a small hole in the lid. Lots of other cans have this hole. Why?

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