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BrainStuff

Why does my hard drive make that churning sound? Why is Friday the 13th considered unlucky? Join Marshall Brain as he explores the science behind everything from microwave popcorn to metal detectors.

www.howstuffworks.com/

Categorized: Education
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  1. How does a Crooke's radiometer work?

    Thursday at 3:21 PM

    Vacuums and light combine to power a Crooke's radiometer -- but how does it work? Listen in and learn more about the mechanisms inside the radiometer in this podcast from HowStuffWorks.com.

  2. Why is Friday the 13th considered unlucky?

    Wednesday at 3:31 PM

    In countries like the United States, people have a superstitious fear of one particular date: Friday the 13th. But why? In this episode, Marshall discusses the two main fears that have fueled the Friday the 13th superstitions, as well as their origins.

  3. Why does my hard drive make that churning sound?

    Mon May 20, 2013 at 8:09 PM

    Inside the hard drive of many computers, a small arm moves across the face of the hard disk. Tune in to this podcast from HowStuffWorks.com to discover how the movement of this arm produces sound -- and why the arm must move to load files.

  4. How do big city shell and three-card monte games work?

    Fri May 17, 2013 at 4:39 PM

    Shell games and three-card monte games are common sights in big cities, but did you know they're scams? Marshall explains the similar principles and tricks behind these "games" -- and why you can't win them -- in this episode.

  5. How is wire measured?

    Wed May 15, 2013 at 3:21 PM

    In the United States, wires are measured by diameter using a standard called AWG, or American Wire Gauge. Discover how the AWG system works -- and where it came from -- in this podcast from HowStuffWorks.com.

  6. How can I make artificial snow in my backyard?

    Mon May 13, 2013 at 11:05 PM

    If you live in a cold enough climate, you can make fake snow just like they do for ski resorts. In this episode, Marshall shares two techniques for creating artificial snow in your own backyard -- and what to do if you live in a warm climate.

  7. What would happen on a carousel moving at the...

    Fri May 10, 2013 at 4:31 PM

    If you could spin a carousel fast enough, would time stand still for the people on the carousel? Theoretically, it's a reasonable assumption. Join Marshall Brain as he breaks down the speed of light and time in this podcast from HowStuffWorks.com.

  8. What is a fossil?

    Wed May 8, 2013 at 9:21 PM

    Fossils provide us with an important picture of ancient life. But how is a fossil created, exactly? Marshall Brain breaks down the various natural processes behind fossilization in this episode.

  9. What is leather and where does it come from?

    Mon May 6, 2013 at 9:52 PM

    Most leather is made from processed cattle skin, although synthetic and other varieties exist. Learn more about leather in this episode of BrainStuff.

  10. What's the best way to back up a computer's hard disk?

    Fri May 3, 2013 at 8:18 PM

    Your computer's hard disk stores all your information, but what happens if it gets damaged or dies? In this episode, Marshall Brain explains why it's important to back up your hard disk and weighs the advantages and disadvantages of three backup methods.

 
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