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How Mufflers Work
auto.howstuffworks.com/muffler.htm
Mufflers cancel out most of an engine's noise. Find out how mufflers cancel sound waves, why engines are so loud, and look inside a muffler to learn about backpressure.
How Noise-canceling Headphones Work
electronics.howstuffworks.com/gadgets/audio-music/noise-canceling-headphone.htm
Noise-canceling headphones are designed to maximize your listening experience. Learn how noise-canceling headphones keep ambient noise out without sacrificing your music's sound quality.
How Talk Boxes Work
electronics.howstuffworks.com/gadgets/audio-music/talk-box.htm
Talk boxes were some of the first devices to make musicians sound like robots. See how talk boxes work and popular musicians who have used talk boxes.
Frequency Formula Basics: 2 Ways to Calculate Frequency
science.howstuffworks.com/math-concepts/frequency-formula.htm
Frequency is a fundamental concept when you're talking about waves, whether that means electromagnetic waves like radio waves and visible light, or mechanical vibrations like sound waves.
Why Chuck Yeager Was the Greatest Pilot of All Time
science.howstuffworks.com/transport/flight/modern/chuck-yeager.htm
Before Yeager did it, people thought it was impossible to break the sound barrier in flight. But he proved them wrong, even flying the plane while nursing two cracked ribs.
How did language evolve?
science.howstuffworks.com/life/evolution/language-evolve.htm
Let's assume that long ago Homo sapiens communicated by grunting at one another. How and when did all those grunting sounds evolve into a verb tenses, clauses and proper nouns?
Heron vs. Crane: A Comparison of Long-legged Birds
animals.howstuffworks.com/birds/heron-vs-crane.htm
The heron vs. crane debate might sound like something only birdwatchers care about, but knowing the difference is key for anyone who loves wildlife or spends time near wetlands.
Where Do Horses Originate From? Not Europe, Not Asia
animals.howstuffworks.com/mammals/where-do-horses-originate-from.htm
Where do horses originate from? We don't mean to sound corny, but the answer really does take us on a journey through millions of years of evolution, migration, and domestication.
Pacific Northwest Tree Octopus: The Internet's Favorite Fake
science.howstuffworks.com/science-vs-myth/strange-creatures/pacific-northwest-tree-octopus.htm
Sounding like something out of a sci-fi novel, the Pacific Northwest tree octopus has made its way into the hearts of internet users, educators and even conservation enthusiasts for years.
How Venus Flytraps Work
science.howstuffworks.com/life/botany/venus-flytrap.htm
Plants that eat other creatures? It sounds like a genetic experiment gone awry. But there's actually nothing unnatural about it; carnivorous plants have been around for millions of years.