CHECK
OUT THE
BOOK!
DO THIS Move your head backward and forward, keeping your eyes fixed on the
plus sign at the image’s center. The three black-and-white rings will start to turn!WHAT’S UP Your brain is used to seeing objects blur when they’re moving at high
speeds. And the blurry pattern of the rings combined with the backward and for-
ward movement of your head confuse your brain, causing it to see the rings in
motion. The repeated pattern might enhance the effect.Spin CycleSpin Cycle
28 APRIL 2017