Brainstuff
BrainStuff
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What is a decibel, and how is it measured?
The decibel unit is used to measure the intensity of ...
The decibel unit is used to measure the intensity of a sounds. Check out our HowStuffWorks article to learn more about the decibel scale.
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Why do the plugs on some appliances have two prongs and others have three?
When you look at a normal 120-volt outlet in the ...
When you look at a normal 120-volt outlet in the United States, there are two vertical slots and then a round hole centered below. Take a look at this HowStuffWorks article to learn why appliance cords are shaped this way.
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How do sodium acetate heat pads work?
Sodium acetate heat pads start out as a pouch of ...
Sodium acetate heat pads start out as a pouch of liquid and crystallize into a warm solid. Explore the fascinating chemistry that makes these heat pads work in this podcast from HowStuffWorks.com.
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How do they create patterns in a baseball field?
Groundskeepers at baseball fields create patterns using a process called ...
Groundskeepers at baseball fields create patterns using a process called lawn striping. Tune in to find out how this process works -- and how you can duplicate it to create designs in your own yard.
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What are dissolvable stitches?
Stitches have been used for centuries, but dissolvable ones are ...
Stitches have been used for centuries, but dissolvable ones are the most common these days. Why would you want stitches to dissolve, and how do they work? In this episode, Marshall discusses the benefits and features of absorbable sutures.
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how does a direct-injection 2-stroke engine work?
In a previous episode, Marshall explained how 4-stroke, direct-injection engines ...
In a previous episode, Marshall explained how 4-stroke, direct-injection engines work. In this one, he takes a look at 2-stroke engines that utilize direct injection technology.
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How does rust work?
In this episode of BrainStuff, Marshall Brain explains the chemistry ...
In this episode of BrainStuff, Marshall Brain explains the chemistry behind rust, or iron oxide, and the rusting process.
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Why use a humidifier in your home in the winter?
Lots of people use humidifiers in their homes, especially in ...
Lots of people use humidifiers in their homes, especially in winter. But why? Marshall discusses some advantages of using humidifiers (and disadvantages of not using them) and different types of home humidifiers.
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How do I burn calories on a stair machine?
If you've ever sweated your way through a work-out on ...
If you've ever sweated your way through a work-out on a stair machine, you know that calories are definitely being burned in the process. But how? Learn more about foot-pounds, horsepower and stair machines in this podcast from HowStuffWorks.com.
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What exactly is pastrami?
Like cheese, pastrami is a good example of old-fashioned food ...
Like cheese, pastrami is a good example of old-fashioned food preservation techniques. Find out how corned beef becomes pastrami in this podcast from HowStuffWorks.com.
