(つ◔౪◔)つ━☆゚.*・。゚ The 2020 TKSST Gift Guide ✩°。⋆・゚  
The Kid Should See This

“Balloons look really weird when they resonate.” – Steve Mould

What is the resonant frequency of a balloon? Steve Mould hooked up a balloon to a scientific vibration generator to find out.

Resonating balloons look really odd on camera. What you see is a sort of slow motion. It’s actually the stroboscopic effect. The image is made stranger by the addition of rolling shutter.

Learn more about the stroboscopic effect at the end of Mould’s physical demonstration of gravitational waves video and via these 3D-Printed “Blooming” Fibonacci Zoetrope Sculptures.

Plus: Resonance, forced vibration, and a tuning forks demo, Mercury Hz: Sound waves passing around & through mercury, and water balloons falling (and bouncing) in slow motion.

This award-winning video collection is reader-supported. Become a sustaining member to keep TKSST online and free for everyone, including teachers and parents who use it as a resource to spark learning and curiosity for kids.

🌈 Watch these videos next...

See the unseen: Cymbal at 1,000 frames per second

Rion Nakaya

4-Mation 3D Zoetropes: Fish Eating Fish and Jumping Frogs

Rion Nakaya

Eggstatic – Stroboscopic patterns animate on Easter eggs

Rion Nakaya

The Guillemot egg, an egg that saves its own life

Rion Nakaya

Making sounds visible: Sound vibrations transform colorful sand patterns

Rion Nakaya

Embroidered zoetrope animations by Elliot Schultz

Rion Nakaya

Mercury Hz: Sound waves passing around & through mercury

Rion Nakaya

How to make a noisemaker

Rion Nakaya

Cymbals – How It’s Made

Rion Nakaya