Many teachers visit this site looking for optical illusions to put
in their lesson plans. This is a perfect example of an optical illusion
that can be drawn. It's another shape in the optical illusions collection
that will twist and turn in your mind. The three dots will appear to
be inside the object if you scan it from left to right, but then they'll
appear to be on the outside of this impossible shape if you scan it
with your eyes from the right to left!
Sometimes, you'll see a similar picture with the "devil's pitchfork" showing that the trident cannot really insert into the three holes, because the trident is shown in a similar way.
Please rate this illusion/picture. Your ratings help us choose which new optical illusions to create:
Best of the Best ...
Most Popular for October 2009:
Same Shade Diamonds Our newest optical illusion.
We just created it on 10/10/2009
Wow! It will look like the diamonds on the top are much darker than the diamonds on the bottom.
You won't believe how amazing this incredible optical illusion is.
Watch as the scary faces disappear before your eyes.
The longer you stare the stronger the illusion. Perfect to send to your friends for Halloween!
The Obama Illusion
We made this original Barack Obama Illusion and then we made it famous!
Stare for about 30 seconds and you'll see his ghostly image appear on the wall!
Valentines Day Love Test Illusion
This is one of our most highly rated illusions by our visitors. Watch the hearts disappear before your very eyes!
This is really cool. You'll start to see the hearts disappear as you fixate at the center. Don't miss it.
Moving Spiral Illusion
A version of our original moving spiral illusion was recently published in a popular college textbook.
It uses multiple illusory principles to give the illusion that it is moving when it is absolutely not moving. Big enough to be your desktop background!
Build Your Own Impossible Triangle
Instructions so you can build your own impossible triangle. Tell M.C. Escher that it's not so impossible after all!
Comes with a printable PDF guide with dotted lines for the folds and clearly marked lines to cut. See pictures of visitors submitted triangles too!
If you don't have time to see the hundreds of illusions today, see if you can at least catch all of these...
