3 ms·

If you lay a straightedge along the top of the circles, they do not remain aligned. It seems that the circles do move

• enneff 6y ago
  You can use another window as a straightedge. :)
  • rendall 6y ago
    Yeah anything straight, really
• rendall 6y ago
  I got downvoted for pointing out the circles actually move? Weird.
  • viraptor 6y ago
    They don't, that's the whole point. Check it again - they only seem to move.
    • rendall 6y ago
      I disagree. The border pixel is changing between three non-background colors. I would define that as moving.
• dragontamer 6y ago
  https://twitter.com/Jakesaurius/status/1331543133910396929 https://twitter.com/Jakesaurius/status/1331543133910396929 The circles do not move. The outer most layer of pixels however, changes color, giving the illusion that they're moving. Once you understand how the "outer-rim of pixels" contributes to the illusion, it all makes sense.
  • rendall 6y ago
    I consider a loss of a pixel on one side simultaneous with the addition of a pixel on the other side as "moving". Loss and addition here meaning "change in color"