Скачать или смотреть What Do Those Tabs On Rearview Mirrors Actually Do?

Sure, rearview mirrors are cool -- but how do they actually work? How can the same piece of glass have two different amounts of reflection? Join Josh as he explains the science behind these handy devices.

Whether the topic is popcorn or particle physics, you can count on the HowStuffWorks team to explore - and explain - the everyday science in the world around us on BrainStuff.

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