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Exploring Sound: Sound Waves
- The vibrations of an object compacts air molecules in some places (compression) and causes expansion of air in other places (rarefaction).
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Build It Bigger: Kinetic Madness
(1:57)
Roller coasters use physics to create breathtaking and terrifying thrills in amusement parks across the world. Watch a video from the Discovery Channel.
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How Dry Cleaning Works
(1:32)
Dry cleaning is an amazing technology, but do you know what actually happens behind the counter? Find out how dry cleaning works in this HowStuffWorks Video.
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Invention Nation: Solar Panels
(1:22)
Take a closer look at the technology used to build solar panels. Learn more about solar cells in this video.
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How Fireworks Work
(1:18)
Fireworks have a special and beautiful magic all their own. Watch this HowStuffWorks video to learn how they make such incredible colors and designs.
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The Surprise
(7:15)
Archaeologists find an ancient mummified mother and child. Learn more about the cause of death of the mummies.
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Measuring Bones 3
(1:54)
From the archives of Discovery: Forensic researchers use a variety of methods to analyze and measure fragments of bone. Learn more about forensics and bone analysis.
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Bone Analysis
(2:02)
From the archives of Discovery: Forensic researchers use a variety of methods to analyze and measure fragments of bone. Learn more about forensics and bone analysis.
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Forensic Research with a Green Light
(1:28)
From the archives of Discovery: Forensic investigators routinely use high-powered lights to scrutinize a piece of evidence. Learn more about forensic research.
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