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