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By on August 5, 2012, with 18 Comments

Reverse Spokes IllusionReverse Spokes IllusionAnother cool illusion featured and explained by COGSCIdotNET is the Reverse Spokes Illusion. This particular effect was discovered by Anstis and Rogers, and it works in a way so that grey lines (or “spokes”) separating the pizza into slices, appear to be rotating clockwise. However, on a closer inspection you can clearly see that this is not the case!

What is happening here is that the grayish color-wave traverses the wheel in a counterclockwise direction, and the spokes occasionally get gobbled-up by the pizza slices. This occurs because two of the pizza slices are of the same color as the spokes!


18 Responses
  1. Roosie says:

    You mean it looks like it’s moving around when the lights on/off it and really it’s not…. Oh, yeah – I see it when you say it like that! :)

  2. z2d4th says:

    this is what i called real and fantastic illusion

  3. Adam says:

    Now that’s awesome. Nice find.

  4. KRISTINJONI says:

    Love this one. Great effect. Still amazed at how it tricks my mind into seeing it move!

  5. Indiana Jones says:

    Very simple, yet very powerful. Love it!

  6. clues says:

    So cool I wish it was something that I could do!

  7. fossda says:

    good illusion, but been around for ages!

  8. glittergirl says:

    weird, i dont get this?
    first comment though!!!!!!!!

  9. ? says:

    I don’t see it.

  10. ? says:

    Oh! I see it now!

  11. Care Bear says:

    Just looks like a big ol’ umbrella to me. Good thing. We’ve been getting a fair number of thunder storms lately. ;-)

  12. shhhhhhh says:


  13. rajan says:

    very good.

  14. Maddie says:

    1It spins faster when you look at a nearby white spot.

    Cool illusion. Hurts your eyes BAD though

  15. Alfred Money says:

    this is an animation its actually moving i copied to my pc and its like 7 pictures in one

    • Pancreas McGlockenspiel says:

      Umm, yeah, we know it’s moving.
      But the spokes aren’t.
      That’s kind of the point.

      I actually can’t believe you checked if it was moving!

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