BrainStuff

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What are MP3 files and how do they work Nov 19, 2008

Show notes

CDs store music using 44,100 16-bit digital samples per second, adding up to about 10 megabytes per minute -- and that's too large to move easily move across the internet. Check out this HowStuffWorks podcast to learn how MP3 files solve this problem.

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Why do apples and potatoes turn brown when you slice them? Oct 10, 2008

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All cells contains thousands of enzymes, and each of these enzymes is necessary for the cell. Check out this HowStuffWorks podcast to learn which enzymes cause apples and potatoes to turn brown upon exposure to oxygen.

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What is an anti-siphon valve? Oct 08, 2008

Show notes

In houses with a built-in sprinkler system, anti-siphon valves prevent pesticides, pet waste, and other contaminants from polluting the home's water source. Check out this HowStuffWorks podcast to learn more about anti-siphon valves.

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How a GFCI outlet works Oct 03, 2008

Show notes

A normal 120 volt outlet in the US has two vertical slots and a role hole centered below the slots -- the outlets with a pair of red and black 'test' and 'reset' buttons are known as GCFI outlets. Check out this HowStuffWorks podcast to learn more.

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Could anti-lock brakes detect a flat? Sep 29, 2008

Show notes

By using a computer to monitor the rotation of the car's wheels, an anti-lock braking system helps drivers avoid skids. Could this computer also monitor flat tires? Check out this HowStuffWorks podcast to learn more about brake systems.

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How Gun Silencers Work Sep 22, 2008

Show notes

The sound of gunfire is incredibly loud, and it is amazing that anything is able to silence a firearm. However, the principle behind a gun silencer is surprisingly simple. Check out our HowStuffWorks article to learn more about silencers.

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How Heart Bypass Operations Work Sep 19, 2008

Show notes

Since the heart is a muscle, it relies on the oxygen and nutrients contained in blood. This blood is supplied by arteries on the exterior of the heart -- when these arteries are blocked, a heart attack results. Take a look at our HowStuffWorks article to

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What is the difference between jelly jam and preserves? And What is Jello? Sep 12, 2008

Show notes

Jam, jelly, and preserves are all made from fruit mixed with sugar and pectin. Jell-O, on the other hand, is completely different. Take a look at our HowStuffWorks article to learn more.

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How children from the same parents look so different? Sep 08, 2008

Show notes

Every person has a set of chromosomes, or coiled strands of DNA. Check out this HowStuffWorks podcast to learn how chromosomes combine to promote variation from one generation to the next.

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How Catapults Works Sep 05, 2008

Show notes

There are three different technologies that fall into the catapult category: the ballista, the trebuchet and the catapult. Check out this HowStuffWorks podcast to learn more about the differences between catapult technologies.

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