Rotation changes the interpretation

Optical Illusion by rotation

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Some things change completely when turned upside down. In the neighbouring movie you may observe: the beaver (or water rat?) changes to a donkey.

You can run / pause by clicking the top left button. You can also click on the slider and rotate manually, or use the left-right cursor keys after clicking on the slider handle.

Source

Julian Jusim: “Kopfunter/Kopfüber” (Jusim/Pressler, Hanser-Verlag)



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In the fairy tale at the left, bistable situations can occur at oblique angles. You can test this using the bottom slider.

Source. I constructed this movie from the picture “a-j-a.gif” which I found “somewhere on the Internet”. It is also known as “(after) 6 beers”. Could anyone enlighten me about the original source? [It’s not from the “Invisible Monsters” cover, I had this image before that book came out.]
The painter Rex Whistler created a similar design “Cinderella and her fairy godmother”.



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The above picture has been embodied in this very neat coin design (The “Hillary Illinois Quarter”) on the right, which can actually be obtained at Joel’s Coins (for a little more than a quarter ;-)).

 

Created: 2000-Jun-01


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Last update 2014-06-15 by Michael Bach (G+)