Category: Optical illusion
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Purple square illusion
Every purple square seems twisted. And is not.
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Daily inspiration with WordPress
Some people have been telling me: “You blog! That must take a lot of time and you must be there each and every day”. Don’t worry, I may post something on Roumazeilles.net every day, but it does not mean that I am in front of the keyboard every day. Far from it. I am using…
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Are you sea-sick?
Everything is moving if you stare at this optical illusion.
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Face illusion
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Knight or stones?
You just have to turn your head 90° to fully change your perspective.
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An optical illusion for St Patrick’s day
This is a special gift to all readers from Ireland: You are continuously the country where visitors spend more time on this web site (more than 4 minute per visit) from all countries contributing more than 20 visits per month. Special for St Patrick’s Day: If you stare at the image, the clover leaves will…
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Zig zag
When straight lines are no longer straight.
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How to draw a triangular optical illusion
Of course, you know about the impossible triangle (very classical optical illusion). Do you know how to draw it? It is complicated indeed and most people will do some ugly sketch instead of a nice optical illusion. However, this is quite simple. It is all a matter of starting it right thanks to the help…
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Classic length illusion
You know it, the two vertical bars have the same length. But your brain will not let you see it. Don’t fight! Your brain is your master.