Balloons look really weird when they resonate

The first 76 people to sign up at https://brilliant.org/stevemould/ will get 20% off an annual premium subscription.

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.

Here are the other videos I mention in this one:

Gravitational waves video featuring the stroboscopic effect at the end: https://youtu.be/dw7U3BYMs4U
Fidget spinner video featuring rolling shutter: https://youtu.be/G7hh42AgBlQ
Resonance video: https://youtu.be/dihQuwrf9yQ

Twitter: http://twitter.com/moulds
Instagram: https://www.instagram.com/stevemouldscience/
Facebook: https://www.facebook.com/stevemouldscience/
Buy nerdy maths things: http://mathsgear.co.uk