Brainstuff
BrainStuff
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Why does the moon look bigger when it's near the horizon?
When the moon is near the horizon, it appears to ...
When the moon is near the horizon, it appears to be much bigger than when it's high in the sky. But is it really larger? Tune in to find out.
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How do photochromatic lenses work?
Photochromatic lenses darken when exposed to the sun. Discover where ...
Photochromatic lenses darken when exposed to the sun. Discover where these lenses came from, how they work and why they're commonly referred to as "transition" lenses in this episode of BrainStuff.
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How does a movie clapperboard work?
A movie clapperboard isn't just a placemarker; this device helps ...
A movie clapperboard isn't just a placemarker; this device helps movie makers synchronize a movie's audio and video elements. Find out how a traditional movie clapperboard works, as well as a digital one, in this episode of BrainStuff.
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Why doesn't gasoline burn cleanly?
Since gasoline is a liquid formed of carbon and hydrogen, ...
Since gasoline is a liquid formed of carbon and hydrogen, it's possible to trace the chemical reactions in car exhaust and understand what types of pollutants are created by a car's engine. Tune in and learn more about the science behind burning gas.
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How do jet engines start?
If you've ever watched a jet engine start, you've probably ...
If you've ever watched a jet engine start, you've probably noticed that the blades begin to rotate slowly before spinning up to full speed -- but why? Listen in as Marshall Brain breaks down the science behind jet engines in this episode.
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Can cans and string really be used like a telephone?
You've probably heard of this trick before: Connecting two cans ...
You've probably heard of this trick before: Connecting two cans with a piece of string in the bottom of each can will supposedly allow people to speak over a distance to one another. Tune in as Marshall Brain explains how it works in this episode.
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What is making my backyard sparkle at night?
One night, Marshall went outside with a headlight lamp on ...
One night, Marshall went outside with a headlight lamp on his head and discovered that his backyard was full of sparkling reflections. What were these sparkles? Discover the surprising answer in this episode.
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What can you do to make yourself really unhappy?
There are lots of articles and research on happiness these ...
There are lots of articles and research on happiness these days, but what about unhappiness? What makes us unhappy, and will avoiding it make us happy? In this episode, Marshall points out three behaviors that are sure to create unhappiness.
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How do artificial flavors work?
Artificial flavors imitate natural flavors and are found in many ...
Artificial flavors imitate natural flavors and are found in many processed products. Learn more about the chemistry of flavors, both natural and artificial, in this episode of BrainStuff.
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How does high-speed rail work?
Although it's common in some countries, high-speed rail service isn't ...
Although it's common in some countries, high-speed rail service isn't available in the United States -- yet. Tune in to learn more about this swift rail service -- and how soon we're likely to have it in the U.S. -- in this episode.
