Spiral illusion 9
since July 18, 2015
"Dancing girl spirals"
Concentric circles appear to be spirals that go to the center rotating counterclockwise.
Copyright Akiyoshi Kitaoka 2017 (July 5)
"Girl spirals"
Concentric circles appear to be spirals that go to the center rotating counterclockwise.
Copyright Akiyoshi Kitaoka 2017 (June 22)
"Girl entanglement"
Concentric circles appear to be entangled.
Copyright Akiyoshi Kitaoka 2017 (July 8)
"Logo of the 36th Annual Meeting of the Japanese Psychonomic Society"
Concentric circles appear to be entangled.
Copyright Akiyoshi Kitaoka 2016 (May 22)
"Brexit"
"British spirals"
Concentric circles appear to be spirals that go to the center rotating counterclockwise.
Copyright Akiyoshi Kitaoka 2016 (June 28)
Spiral illusion of the Fraser illusion
"Ladder spirals"
Concentric circles appear to be spirals that go to the center rotating clockwise.
Copyright Akiyoshi Kitaoka 2016 (February 16)
"Gravity wave spirals"
Concentric circles appear to be spirals that go to the center rotating clockwise.
Copyright Akiyoshi Kitaoka 2016 (February 13)
(No illusion if circles are homogeneously black or white)
"Gravity wave spirals: color version 1"
Concentric circles appear to be spirals that go to the center rotating clockwise.
Copyright Akiyoshi Kitaoka 2016 (February 13)
"Gravity wave spirals: color version 2"
Concentric circles appear to be spirals that go to the center rotating clockwise.
Copyright Akiyoshi Kitaoka 2016 (February 13)
"Gravity wave spirals: the simplest version"
Concentric circles appear to be spirals that go to the center rotating clockwise.
Copyright Akiyoshi Kitaoka 2016 (February 13)
"Gravity wave spirals: a triangular version"
Concentric circles appear to be spirals that go to the center rotating clockwise.
Copyright Akiyoshi Kitaoka 2016 (February 15)
(remake)
"Kaminari-san"*
*God of thunder
Concentric gray lines appear to be spirals.
Copyright A.Kitaoka 1998 (remade February 1, 2016)
"Cardioids"
Concentric circles appear to be cardioids.
Copyright Akiyoshi Kitaoka 2015 (June 18)