Ultrasound gel does amazing things to sound waves

I was curious about the purpose of ultrasound gel. It's really interesting so I built this wave machine to explain how it affects sound. Free to watch on Dr.Doc Kids.

Courtesy of Steve Mould on YouTube. Watch on YouTube ↗

More Dr.Doc Kids: Science & Experiments

The Barkhausen Effect Lets You Hear Magnetic Domains2021•10m•HDBowled Over - Isolating Variables: Crash Course Kids #39.12016•5m•HDLook Inside a Flower!2017•4m•HDThe squeaky clean effect - the chinese spouting bowl2017•3m•HDLevitating Liquid Oxygen Droplets Dancing In a Magnetic Trap2020•6m•HDVacation or Conservation (Of Mass): Crash Course Kids #23.12015•4m•HDHow Will We Get To Mars? | Let's Explore Mars!2023•7m•HDGravity defying lip gloss explained2020•10m•HDDoes Superglue Still Work in a Vacuum Chamber? The Ultimate Superglue and Baking Soda Experiment2018•9m•HDDefining Gravity: Crash Course Kids #4.12015•3m•HDMy First Time Flying on an Airplane! | Airplane Science2022•5m•HDThe bizarre ripples that form in a stream of water2018•12m•HD