Impossible figures

since May 8, 2004; access since February 15, 2005



"Infinite infinite staircase 4"

This image appears to be an infinite staircase.

Copyright Akiyoshi Kitaoka 2009 (March 15)



"Infinite infinite staircase 2"

This image appears to be an infinite staircase.

Copyright Akiyoshi Kitaoka 2009 (March 15)



"Tetragon"

I have created this image for the future Japan Department of Defense.

Copyright Akiyoshi Kitaoka 2009 (March 15)


"Minimum infinite staircase"

Copyright Akiyoshi Kitaoka 2009 (March 11)



"Really minimum infinite staircase"

Copyright Akiyoshi Kitaoka 2009 (March 15)



"Minimum infinite staircase at night"

Copyright Akiyoshi Kitaoka 2009 (March 15)

Penrose, L.S.; Penrose, R. (1958). "Impossible objects: A special type of visual illusion". British Journal of Psychology 49: 31–33. <February 25, 2013>


"An image of Ames room"

Copyright Akiyoshi Kitaoka 2008 (March 22)


An image in which size constancy works


"Woods"

Copyright Akiyoshi Kitaoka 2007 (April 24)


"Columns: Day and night"

Copyright Akiyoshi Kitaoka 2007 (April 24)


"Penrose Triangle in Perth"

I wish there were one in Kyoto.

Copyright Steve Berry 2007 (April 21)

Thanks to Steve


"Rolles of toilet paper"

Copyright Akiyoshi Kitaoka 2007 (March 9)


"Impossible blocks for the study of mental rotation"

May 8, 2004
I guess someone might produce a similar or the same image before.


"Icecreams"

The two lines of icecreams are impossible.

Copyright Akiyoshi Kitaoka 2005 (January 17)


According to Wikipedia, "the father of the impossible figure"is Oscar Reutersvärd (1915 Stockholm - 2002), Swedish artist. <July 17, 2006>

Oscar Reutersvärd's works


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