How do horns amplify sound? Why are they flared at the ends? And how do airhorns work? Mark Rober wanted to find out so he spent eight months building a massive air horn… perhaps the world’s largest horn.
In this video, he takes it to the desert to test the speed of sound and shatter some glass with Lincoln and Dan from What’s Inside. He also explores how hearing works and why horns have that curved shape. File under: Jello and impedance matching.
Award-winning related reading for ages 6-14: Adventures in Sound with Max Axiom, Super Scientist.
Plus: A waterless & chemical-free sound wave fire extinguisher, resonance, forced vibration, and a tuning forks demo, and Sounding Shetland’s recently restored Sumburgh Head Foghorn.
Bonus: Building the solar system to scale in the Nevada desert.
This Webby award-winning video collection exists to help teachers, librarians, and families spark kid wonder and curiosity. TKSST features smarter, more meaningful content than what's usually served up by YouTube's algorithms, and amplifies the creators who make that content.
Curated, kid-friendly, independently-published. Support this mission by becoming a sustaining member today.