Search Results | pressure

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How Long Do Helium Balloons Last?

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Scenario: A helium balloon is up against the ceiling one day, and the next day it's on the floor. Does the balloon fall because the helium leaks out, or because the helium molecules slow down due to decreased pressure?

How did public fountains, like those in Rome, work without any type of motor to pump the water?

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Rome is famous for having large public fountains that work without the use of any kind of mechanized pump. How were these fountains able to generate enough water pressure without a motor? Check out this article for the answer to this question.

What Does a Radiator Do?

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The radiator of your car is composed of tubes that carry the coolant fluid, a protective cap that's actually a pressure valve, and a tank on each side to catch the coolant overflow. Learn more about how a radiator cap works from this article.

Are Electric Cars Cheaper to Run?

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So you've done everything you can think of: You've checked your tire pressure, carpooled, telecommuted -- maybe you even bought a hybrid. Learn more about how electric cars run cheaper.

How Would You Do on Your O.W.L'S?

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You've reached your fifth year at Hogwarts, and the time has come to take your O.W.L'S. No pressure though, it just determines whether you can continue to study in each specialized subject within wizardry. Good luck!

Can You Answer These Knitting Questions?

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Not only can it can help reduce your blood pressure, knitting also helps slow your heart rate, helps your body fight illness, and helps you create some pretty awesome scarves and sweaters. Don't let these questions throw you for a loop!

How Does a Lie Detector (Polygraph) Work?

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You may know a bit about polygraphs, but do you know which physical reactions it actually monitors?

Forget Aspirin for Heart Health: Eat Tomato (Seeds) Instead

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Doctors often advise patients with cardiovascular problems, including high blood pressure, to take a daily aspirin to improve blood flow and prevent clots. However, aspirin tends to have a nasty side effect: over time, you may develop ulcers due to irritation to your stomach from taking it.

If nature abhors a vacuum, then why doesn't the vacuum of space suck away all of the Earth's atmosphere?

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If "nature abhors a vacuum," then why doesn't the vacuum of space suck away all of the Earth's atmosphere?

5 Ways That Love Is Good for Your Health

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Learn about why love is good for your heart and develop a new appreciation for Valentine's Day, the day of love and heart health!

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