These gears aren’t spinning. It’s an optical illusion. Really. (strobe warning)

https://i1.wp.com/media.boingboing.net/wp-content/uploads/2020/03/screenshot-27.jpg?fit=801%2C642&ssl=1https://boingboing.net/2020/03/06/these-gears-arent-spinning.html

For those of you who enjoyed "These boxes aren’t rotating" from earlier this week… These gears aren’t spinning either. I promise. You are experiencing the "reverse-phi" illusion.

Read the rest