Silencing by Motion
In this video, there is a rotating ring consisting of many coloured discs; best fixate the central cross. Notice anything special? Well, the ring changes rotation direction, we all can easily agree on that.
Unsurprisingly, the ring stops. Now it becomes obvious that all the small disks change their colour; going through the rainbow so to speak.
Starting the ring rotation now and looking closely reveals that the colour change happens all the time, but it is barely noticable during rotation.
This effect was published in 2011 by Jordan W. Suchow and George A. Alvarez from Harvard University. It subsequently won, deservedly, the “Best Illusion of the Year Contest”.
#classic
@WhatDoYouSea
