2.41 score from hupso.pl for:
opticalillusion.net



HTML Content


Titleoptical illusion images, pictures, tutorials and information

Length: 60, Words: 7
Description illusion pictures, information on optical illusions and tutorials on visual illusions.

Length: 86, Words: 11
Keywords illusion, illusions, optical illusions, visual illusions, perception, tessellations
Robots
Charset UTF-8
Og Meta - Title pusty
Og Meta - Description pusty
Og Meta - Site name pusty
Tytuł powinien zawierać pomiędzy 10 a 70 znaków (ze spacjami), a mniej niż 12 słów w długości.
Meta opis powinien zawierać pomiędzy 50 a 160 znaków (łącznie ze spacjami), a mniej niż 24 słów w długości.
Kodowanie znaków powinny być określone , UTF-8 jest chyba najlepszy zestaw znaków, aby przejść z powodu UTF-8 jest bardziej międzynarodowy kodowaniem.
Otwarte obiekty wykresu powinny być obecne w stronie internetowej (więcej informacji na temat protokołu OpenGraph: http://ogp.me/)

SEO Content

Words/Characters 2164
Text/HTML 24.06 %
Headings H1 17
H2 1
H3 0
H4 0
H5 0
H6 0
H1
optical illusions
for ecvp 2016  the “witch ring” illusion: experimental stimuli
william wollaston’s gaze illusion
a variant on the “witch ring” illusion
best illusion of the year competition
digital kaleidoscopes – post no. 1
roger shepard’s arc de triomphe revisited
mamluk interlace
bars and bands – illusory expansion
barbers’ poles and the aperture problem
aha!
posts navigation
recent posts
archives
blogroll
meta
illusion books
H2
illusions and visual special effects – explanations and tutorials
H3
H4
H5
H6
strong
b
i
em
Bolds strong 0
b 0
i 0
em 0
Zawartość strony internetowej powinno zawierać więcej niż 250 słów, z stopa tekst / kod jest wyższy niż 20%.
Pozycji używać znaczników (h1, h2, h3, ...), aby określić temat sekcji lub ustępów na stronie, ale zwykle, użyj mniej niż 6 dla każdego tagu pozycje zachować swoją stronę zwięzły.
Styl używać silnych i kursywy znaczniki podkreślić swoje słowa kluczowe swojej stronie, ale nie nadużywać (mniej niż 16 silnych tagi i 16 znaczników kursywy)

Statystyki strony

twitter:title pusty
twitter:description pusty
google+ itemprop=name pusty
Pliki zewnętrzne 13
Pliki CSS 2
Pliki javascript 11
Plik należy zmniejszyć całkowite odwołanie plików (CSS + JavaScript) do 7-8 maksymalnie.

Linki wewnętrzne i zewnętrzne

Linki 220
Linki wewnętrzne 3
Linki zewnętrzne 217
Linki bez atrybutu Title 194
Linki z atrybutem NOFOLLOW 0
Linki - Użyj atrybutu tytuł dla każdego łącza. Nofollow link jest link, który nie pozwala wyszukiwarkom boty zrealizują są odnośniki no follow. Należy zwracać uwagę na ich użytkowania

Linki wewnętrzne

search #search-container
skip to content #content
all categories #menu-main-menu

Linki zewnętrzne

optical illusions http://www.opticalillusion.net/
home http://www.opticalillusion.net/
about http://www.opticalillusion.net/about/
illusion demos with animations http://www.opticalillusion.net/category/animated-posts/
for ecvp 2016
 the “witch ring” illusion: experimental stimuli
http://www.opticalillusion.net/animated-posts/for-ecvp-2016-the-witch-ring-illusion-experimental-stimuli/
http://www.opticalillusion.net/animated-posts/for-ecvp-2016-the-witch-ring-illusion-experimental-stimuli/
david http://www.opticalillusion.net/author/david/
ecvp 2016 http://www.ub.edu/ecvp/about-ecvp
witch ring http://www.opticalillusion.net/optical-illusions/best-illusion-contest-and-a-movie-that-wasnt-an-entry/
http://www.opticalillusion.net/wp-content/uploads/2016/08/introadj.mp4 http://www.opticalillusion.net/wp-content/uploads/2016/08/introadj.mp4
continue reading http://www.opticalillusion.net/animated-posts/for-ecvp-2016-the-witch-ring-illusion-experimental-stimuli/#more-3245
illusion demos with animations http://www.opticalillusion.net/category/animated-posts/
optical illusions http://www.opticalillusion.net/category/optical-illusions/
william wollaston’s gaze illusion http://www.opticalillusion.net/optical-illusions/william-wollastons-gaze-illusion/
http://www.opticalillusion.net/optical-illusions/william-wollastons-gaze-illusion/
david http://www.opticalillusion.net/author/david/
http://www.opticalillusion.net/wp-content/uploads/2015/10/wollastondkr.mp4 http://www.opticalillusion.net/wp-content/uploads/2015/10/wollastondkr.mp4
philosophical transactions of the royal society online http://rstl.royalsocietypublishing.org/content/114/247
http://www.opticalillusion.net/wp-content/uploads/2015/10/wollaston.mp4 http://www.opticalillusion.net/wp-content/uploads/2015/10/wollaston.mp4
movie about them https://www.youtube.com/watch?v=zrdfzgzq0eu
illusion demos with animations http://www.opticalillusion.net/category/animated-posts/
optical illusions http://www.opticalillusion.net/category/optical-illusions/
a variant on the “witch ring” illusion http://www.opticalillusion.net/optical-illusions/best-illusion-contest-and-a-movie-that-wasnt-an-entry/
http://www.opticalillusion.net/optical-illusions/best-illusion-contest-and-a-movie-that-wasnt-an-entry/
david http://www.opticalillusion.net/author/david/
http://www.opticalillusion.net/wp-content/uploads/2015/06/bigface4sit.mp4 http://www.opticalillusion.net/wp-content/uploads/2015/06/bigface4sit.mp4
witch ring illusion http://www.opticalillusion.net/optical-illusions/magic-ring-2/
paper about it in the journal perception http://pec.sagepub.com/content/44/1/103/suppl/dc1
geometric illusions http://www.opticalillusion.net/category/geometric-illusions/
illusion demos with animations http://www.opticalillusion.net/category/animated-posts/
optical illusions http://www.opticalillusion.net/category/optical-illusions/
best illusion of the year competition http://www.opticalillusion.net/optical-illusions/best-visual-illusion-of-the-year-competition/
http://www.opticalillusion.net/optical-illusions/best-visual-illusion-of-the-year-competition/
david http://www.opticalillusion.net/author/david/
1 comment http://www.opticalillusion.net/optical-illusions/best-visual-illusion-of-the-year-competition/#comments
http://www.opticalillusion.net/wp-content/uploads/2014/08/ebbadj.mp4 http://www.opticalillusion.net/wp-content/uploads/2014/08/ebbadj.mp4
best illusion of the year competition http://illusionoftheyear.com/cat/top-10-finalists/2014/
 susanna martinez-conde http://smc.neuralcorrelate.com
static version http://www.opticalillusion.net/optical-illusions/hundred-year-plus-puzzles/
ambiguous images http://www.opticalillusion.net/category/ambiguous-images/
illusion demos with animations http://www.opticalillusion.net/category/animated-posts/
illusions and aesthetics http://www.opticalillusion.net/category/illusions-and-aesthetics/
optical illusions http://www.opticalillusion.net/category/optical-illusions/
tessellations http://www.opticalillusion.net/category/tessellations/
digital kaleidoscopes – post no. 1 http://www.opticalillusion.net/optical-illusions/digital-kaleidoscopes-and-the-drifting-edge-illusion-post-no-1/
http://www.opticalillusion.net/optical-illusions/digital-kaleidoscopes-and-the-drifting-edge-illusion-post-no-1/
david http://www.opticalillusion.net/author/david/
http://www.opticalillusion.net/wp-content/uploads/2014/04/fish4sitebb.mp4 http://www.opticalillusion.net/wp-content/uploads/2014/04/fish4sitebb.mp4
nova magic marble kaleidoscopes http://www.kaleidoscopestoyou.com/nomamatebyge.html
tessellate http://www.opticalillusion.net/tessellations/how-to-do-tessellations-animated-demo/
figure/ground effects http://www.opticalillusion.net/optical-illusions/figureground-artistic-effects/#more-425
continue reading http://www.opticalillusion.net/optical-illusions/digital-kaleidoscopes-and-the-drifting-edge-illusion-post-no-1/#more-2702
ambiguous images http://www.opticalillusion.net/category/ambiguous-images/
impossible worlds (inc. staircases) http://www.opticalillusion.net/category/impossible-worlds/
optical illusions http://www.opticalillusion.net/category/optical-illusions/
roger shepard’s arc de triomphe revisited http://www.opticalillusion.net/optical-illusions/roger-shepards-arc-de-triomphe-revisited/
http://www.opticalillusion.net/optical-illusions/roger-shepards-arc-de-triomphe-revisited/
david http://www.opticalillusion.net/author/david/
- http://www.opticalillusion.net/wp-content/uploads/2013/12/arcredo4site.jpg
even more twisted version http://www.opticalillusion.net/nggallery/post/more-illusion-pictures/?pid=56
belvedere http://www.wikipaintings.org/en/m-c-escher/belvedere
animated 3d versions http://www.youtube.com/watch?v=7dmjhhpcqfo
see the original http://www.loc.gov/pictures/item/2001698547/
illusions and aesthetics http://www.opticalillusion.net/category/illusions-and-aesthetics/
tessellations http://www.opticalillusion.net/category/tessellations/
mamluk interlace http://www.opticalillusion.net/tessellations/mamluk-interlace/
http://www.opticalillusion.net/tessellations/mamluk-interlace/
david http://www.opticalillusion.net/author/david/
- http://www.opticalillusion.net/wp-content/uploads/2013/09/mamlukpair.jpg
mamluk period door in the louvre http://cartelen.louvre.fr/cartelen/visite?srv=car_not_frame&idnotice=21166&langue=en
earlier post http://www.opticalillusion.net/illusions-and-aesthetics/art-and-camouflage/
- http://www.opticalillusion.net/wp-content/uploads/2013/09/mamlukdoorall.jpg
continue reading http://www.opticalillusion.net/tessellations/mamluk-interlace/#more-2648
illusion demos with animations http://www.opticalillusion.net/category/animated-posts/
optical illusions http://www.opticalillusion.net/category/optical-illusions/
size-constancy effects http://www.opticalillusion.net/category/size-constancy-effects/
bars and bands – illusory expansion http://www.opticalillusion.net/optical-illusions/bars-and-bands-illusory-expansion/
http://www.opticalillusion.net/optical-illusions/bars-and-bands-illusory-expansion/
david http://www.opticalillusion.net/author/david/
http://www.opticalillusion.net/wp-content/uploads/2013/08/expndbars4bb_f8_hq.mp4 http://www.opticalillusion.net/wp-content/uploads/2013/08/expndbars4bb_f8_hq.mp4
continue reading http://www.opticalillusion.net/optical-illusions/bars-and-bands-illusory-expansion/#more-2620
ambiguous images http://www.opticalillusion.net/category/ambiguous-images/
geometric illusions http://www.opticalillusion.net/category/geometric-illusions/
illusion demos with animations http://www.opticalillusion.net/category/animated-posts/
optical illusions http://www.opticalillusion.net/category/optical-illusions/
barbers’ poles and the aperture problem http://www.opticalillusion.net/optical-illusions/the-barber-pole-illusion/
http://www.opticalillusion.net/optical-illusions/the-barber-pole-illusion/
david http://www.opticalillusion.net/author/david/
http://www.opticalillusion.net/wp-content/uploads/2013/07/wedbarb4bb_f8_hq.mp4 http://www.opticalillusion.net/wp-content/uploads/2013/07/wedbarb4bb_f8_hq.mp4
continue reading http://www.opticalillusion.net/optical-illusions/the-barber-pole-illusion/#more-2569
ambiguous images http://www.opticalillusion.net/category/ambiguous-images/
illusions and aesthetics http://www.opticalillusion.net/category/illusions-and-aesthetics/
optical illusions http://www.opticalillusion.net/category/optical-illusions/
aha! http://www.opticalillusion.net/optical-illusions/aha/
http://www.opticalillusion.net/optical-illusions/aha/
david http://www.opticalillusion.net/author/david/
- http://www.opticalillusion.net/wp-content/uploads/2013/05/rwaha.jpg
seventeenth century engravings http://www.archive.org/stream/churmeevid00bera#page/n9/mode/2up
2003 http://www.perceptionweb.com/perception/perc0103/editorial.pdf
2005 http://www.perceptionweb.com/perception/perc0605/editorial.pdf
- http://www.opticalillusion.net/wp-content/uploads/2013/05/beroman4site.jpg
father christmas turning into playwright henrik ibsen http://www.opticalillusion.net/optical-illusions/rotating-heads-santa-turns-into-ibsen-more-or-less/
nightmare in a hotel http://www.opticalillusion.net/optical-illusions/revolving-heads/
gustave verbeek http://www.opticalillusion.net/optical-illusions/gustave-verbeek/
2 http://www.opticalillusion.net/page/2/
13 http://www.opticalillusion.net/page/13/
next → http://www.opticalillusion.net/page/2/
for ecvp 2016
 the “witch ring” illusion: experimental stimuli
http://www.opticalillusion.net/animated-posts/for-ecvp-2016-the-witch-ring-illusion-experimental-stimuli/
william wollaston’s gaze illusion http://www.opticalillusion.net/optical-illusions/william-wollastons-gaze-illusion/
a variant on the “witch ring” illusion http://www.opticalillusion.net/optical-illusions/best-illusion-contest-and-a-movie-that-wasnt-an-entry/
best illusion of the year competition http://www.opticalillusion.net/optical-illusions/best-visual-illusion-of-the-year-competition/
digital kaleidoscopes – post no. 1 http://www.opticalillusion.net/optical-illusions/digital-kaleidoscopes-and-the-drifting-edge-illusion-post-no-1/
roger shepard’s arc de triomphe revisited http://www.opticalillusion.net/optical-illusions/roger-shepards-arc-de-triomphe-revisited/
mamluk interlace http://www.opticalillusion.net/tessellations/mamluk-interlace/
bars and bands – illusory expansion http://www.opticalillusion.net/optical-illusions/bars-and-bands-illusory-expansion/
barbers’ poles and the aperture problem http://www.opticalillusion.net/optical-illusions/the-barber-pole-illusion/
aha! http://www.opticalillusion.net/optical-illusions/aha/
cockatoo coming through http://www.opticalillusion.net/animated-posts/cockatoo-puzzle/
dark kanizsa triangle http://www.opticalillusion.net/optical-illusions/dark-kanizsa/
stern, smiling and radiant buddha http://www.opticalillusion.net/illusions-and-aesthetics/stern-smiling-and-radiant-buddha/
poggendorff switch http://www.opticalillusion.net/optical-illusions/poggendorff-switch/
the watercolour illusion in reverse http://www.opticalillusion.net/optical-illusions/the-watercolour-illusion-in-reverse/
barrier-grid (or picket-fence) animation http://www.opticalillusion.net/optical-illusions/animated-moire-or-scanimation/
the poggendorff with parallels only http://www.opticalillusion.net/optical-illusions/how-do-you-see-this-comments-would-be-really-helpful/
the watercolour illusion http://www.opticalillusion.net/optical-illusions/the-watercolour-illusion/
gustave verbeek http://www.opticalillusion.net/optical-illusions/gustave-verbeek/
drunken dionysius http://www.opticalillusion.net/optical-illusions/drunken-dionysius/
august 2016 http://www.opticalillusion.net/2016/08/
october 2015 http://www.opticalillusion.net/2015/10/
june 2015 http://www.opticalillusion.net/2015/06/
june 2014 http://www.opticalillusion.net/2014/06/
april 2014 http://www.opticalillusion.net/2014/04/
december 2013 http://www.opticalillusion.net/2013/12/
september 2013 http://www.opticalillusion.net/2013/09/
august 2013 http://www.opticalillusion.net/2013/08/
july 2013 http://www.opticalillusion.net/2013/07/
may 2013 http://www.opticalillusion.net/2013/05/
april 2013 http://www.opticalillusion.net/2013/04/
march 2013 http://www.opticalillusion.net/2013/03/
february 2013 http://www.opticalillusion.net/2013/02/
january 2013 http://www.opticalillusion.net/2013/01/
november 2012 http://www.opticalillusion.net/2012/11/
october 2012 http://www.opticalillusion.net/2012/10/
september 2012 http://www.opticalillusion.net/2012/09/
august 2012 http://www.opticalillusion.net/2012/08/
july 2012 http://www.opticalillusion.net/2012/07/
may 2012 http://www.opticalillusion.net/2012/05/
april 2012 http://www.opticalillusion.net/2012/04/
march 2012 http://www.opticalillusion.net/2012/03/
january 2012 http://www.opticalillusion.net/2012/01/
november 2011 http://www.opticalillusion.net/2011/11/
october 2011 http://www.opticalillusion.net/2011/10/
september 2011 http://www.opticalillusion.net/2011/09/
august 2011 http://www.opticalillusion.net/2011/08/
july 2011 http://www.opticalillusion.net/2011/07/
june 2011 http://www.opticalillusion.net/2011/06/
may 2011 http://www.opticalillusion.net/2011/05/
march 2011 http://www.opticalillusion.net/2011/03/
january 2011 http://www.opticalillusion.net/2011/01/
november 2010 http://www.opticalillusion.net/2010/11/
september 2010 http://www.opticalillusion.net/2010/09/
august 2010 http://www.opticalillusion.net/2010/08/
june 2010 http://www.opticalillusion.net/2010/06/
may 2010 http://www.opticalillusion.net/2010/05/
january 2010 http://www.opticalillusion.net/2010/01/
december 2009 http://www.opticalillusion.net/2009/12/
november 2009 http://www.opticalillusion.net/2009/11/
october 2009 http://www.opticalillusion.net/2009/10/
september 2009 http://www.opticalillusion.net/2009/09/
june 2009 http://www.opticalillusion.net/2009/06/
may 2009 http://www.opticalillusion.net/2009/05/
april 2009 http://www.opticalillusion.net/2009/04/
march 2009 http://www.opticalillusion.net/2009/03/
february 2009 http://www.opticalillusion.net/2009/02/
january 2009 http://www.opticalillusion.net/2009/01/
december 2008 http://www.opticalillusion.net/2008/12/
november 2008 http://www.opticalillusion.net/2008/11/
october 2008 http://www.opticalillusion.net/2008/10/
september 2008 http://www.opticalillusion.net/2008/09/
august 2008 http://www.opticalillusion.net/2008/08/
akiyoshi kitaoka’s site http://www.ritsumei.ac.jp/~akitaoka/index-e.html
buy stuff! http://www.cafepress.com/optoct
illusion cartoon story http://www.opticaloctopus.com
michael bach’s site http://www.michaelbach.de/ot/index.html
online jigsaw puzzles http://jigsawsite.com/
log in http://www.opticalillusion.net/wp-login.php
entries rss http://www.opticalillusion.net/feed/
comments rss http://www.opticalillusion.net/comments/feed/
wordpress.org https://wordpress.org/
- http://www.opticalillusion.net/
ambiguous images http://www.opticalillusion.net/category/ambiguous-images/
animated illusion cartoons http://www.opticalillusion.net/category/animated-illusion-cartoons/
classic illusion books http://www.opticalillusion.net/category/classic-illusion-books/
geometric illusions http://www.opticalillusion.net/category/geometric-illusions/
illusion demos with animations http://www.opticalillusion.net/category/animated-posts/
illusions and aesthetics http://www.opticalillusion.net/category/illusions-and-aesthetics/
impossible worlds (inc. staircases) http://www.opticalillusion.net/category/impossible-worlds/
mini images for your site http://www.opticalillusion.net/category/mini-images-for-your-site/
optical illusions http://www.opticalillusion.net/category/optical-illusions/
photoshop cs3 drawing tips http://www.opticalillusion.net/category/photoshop-cs3-drawing-tips/
size-constancy effects http://www.opticalillusion.net/category/size-constancy-effects/
soap bubble pictures http://www.opticalillusion.net/category/soap-bubbles/
special effects http://www.opticalillusion.net/category/special-effects/
tessellations http://www.opticalillusion.net/category/tessellations/
the poggendorff illusion http://www.opticalillusion.net/category/the-poggendorff-illusion/
100 illusion images http://www.opticalillusion.net/category/mini-images-for-your-site/
- http://www.cafepress.com/optoct
- http://www.cafepress.com/optoct
- http://www.amazon.com/eye-brain-richard-l-gregory/dp/0691048371%3fsubscriptionid%3d1ynz339zchhakyfsy702%26tag%3djobresumesnet-20%26linkcode%3dxm2%26camp%3d2025%26creative%3d165953%26creativeasin%3d0691048371
- http://www.amazon.com/science-illusions-jacques-ninio/dp/0801437709%3fsubscriptionid%3d1ynz339zchhakyfsy702%26tag%3djobresumesnet-20%26linkcode%3dxm2%26camp%3d2025%26creative%3d165953%26creativeasin%3d0801437709
- http://www.amazon.com/m-c-escher-visions-symmetry-new/dp/0810943085%3fsubscriptionid%3d1ynz339zchhakyfsy702%26tag%3djobresumesnet-20%26linkcode%3dxm2%26camp%3d2025%26creative%3d165953%26creativeasin%3d0810943085
- http://www.amazon.com/playful-eye-album-visual-delight/dp/0811826961%3fsubscriptionid%3d1ynz339zchhakyfsy702%26tag%3djobresumesnet-20%26linkcode%3dxm2%26camp%3d2025%26creative%3d165953%26creativeasin%3d0811826961
- http://www.amazon.com/masters-deception-artists-optical-illusion/dp/140275101x%3fsubscriptionid%3d1ynz339zchhakyfsy702%26tag%3djobresumesnet-20%26linkcode%3dxm2%26camp%3d2025%26creative%3d165953%26creativeasin%3d140275101x
- http://www.amazon.com/endless-enigma-magicians-multiple-meaning/dp/3775712836%3fsubscriptionid%3d1ynz339zchhakyfsy702%26tag%3djobresumesnet-20%26linkcode%3dxm2%26camp%3d2025%26creative%3d165953%26creativeasin%3d3775712836
- http://www.amazon.com/impossible-worlds-adventures-objects-evergreen/dp/3822854107%3fsubscriptionid%3d1ynz339zchhakyfsy702%26tag%3djobresumesnet-20%26linkcode%3dxm2%26camp%3d2025%26creative%3d165953%26creativeasin%3d3822854107
proudly powered by wordpress http://wordpress.org/
- http://www.statcounter.com/free_invisible_web_tracker.html

Zdjęcia

Zdjęcia 16
Zdjęcia bez atrybutu ALT 3
Zdjęcia bez atrybutu TITLE 9
Korzystanie Obraz ALT i TITLE atrybutu dla każdego obrazu.

Zdjęcia bez atrybutu TITLE

http://www.opticalillusion.net/wp-content/uploads/2013/12/arcredo4site-800x588.jpg
http://www.opticalillusion.net/wp-content/uploads/2013/09/mamlukpair-787x600.jpg
http://www.opticalillusion.net/wp-content/uploads/2013/09/mamlukdoorall-178x600.jpg
http://www.opticalillusion.net/wp-content/uploads/2013/05/rwaha-771x600.jpg
http://www.opticalillusion.net/wp-content/uploads/2013/05/beroman4site-800x404.jpg
http://jigvps.jigsawsite.com/~opticali/wp-content/uploads/2014/06/logo.gif
http://www.opticalillusion.net/wp-content/themes/calendar_front.jpg
http://www.opticalillusion.net/wp-content/themes/faces_vase.jpg
http://c.statcounter.com/3945765/0/4e0cd8fe/1/

Zdjęcia bez atrybutu ALT

http://jigvps.jigsawsite.com/~opticali/wp-content/uploads/2014/06/logo.gif
http://www.opticalillusion.net/wp-content/themes/calendar_front.jpg
http://www.opticalillusion.net/wp-content/themes/faces_vase.jpg

Ranking:


Alexa Traffic
Daily Global Rank Trend
Daily Reach (Percent)









Majestic SEO











Text on page:

optical illusions search primary menu skip to contenthomeall categoriesabout search for: illusion demos with animationsfor ecvp 2016 the “witch ring” illusion: experimental stimuli august 20, 2016 david this is a post to show animations to accompany a poster, which i and my colleague priscilla heard presented at ecvp 2016.  the poster reported experiments related to the witch ring illusion.  the movies below show illusory effects of sideways movement in streaming patterns of dots.this first movie shows how the static track along which a single file of dots are travelling appears to move sideways when the single track is embedded in a fan-shaped pattern of tracks. http://www.opticalillusion.net/wp-content/uploads/2016/08/introadj.mp4 continue reading → illusion demos with animations, optical illusionswilliam wollaston’s gaze illusion october 30, 2015 david http://www.opticalillusion.net/wp-content/uploads/2015/10/wollastondkr.mp4the eyes in each pair of pictures don’t change at all, and yet in one picture in each pair they seem to look directly at us, whilst in the other they have rotated downwards. (featured: a sportive lemur; & a young man by german 16th century sculptor michel erhart in the victoria and albert museum, london).william wollaston published this illusion nearly 200 years ago. he claimed that our brains seem set up to judge the direction in which the eyes are looking in relation to the face from the position of the pupils in relation to the whites of the eyes, but that direction of gaze depends on head orientation. you can read his original paper in the philosophical transactions of the royal society online. but here’s an animation of the original illustrations:http://www.opticalillusion.net/wp-content/uploads/2015/10/wollaston.mp4the original drawings were done for wollaston by the leading portrait painter of his day, sir thomas lawrence.  they are now in the royal society in london, and there’s a movie about them you can watch on youtube. illusion demos with animations, optical illusionsa variant on the “witch ring” illusion june 7, 2015 david http://www.opticalillusion.net/wp-content/uploads/2015/06/bigface4sit.mp4 here’s another version of the illusion i’ve been working on with my colleague priscilla heard.  the bright v shaped zones imposed on the faces look like they are expanding sideways, especially near the sharp end of the vs at the bottom.  but to the right an isolated bright zone shows that objectively the v tracks are quite static.  you may still see a bit of illusory lateral expansion even in this isolated set of tracks, but note that the top right corner of the track is quite static in relation to the corner of the movie.it’s a version of the witch ring illusion.   i posted about that back in 2011, noting a plan to take a look at it.  this year priscilla and i published a paper about it in the journal perception. geometric illusions, illusion demos with animations, optical illusionsbest illusion of the year competition june 30, 2014 david 1 comment http://www.opticalillusion.net/wp-content/uploads/2014/08/ebbadj.mp4here’s a copy with slight variations of a stunning new animation of the ebbinghaus illusion, by christopher blair, gideon caplovitz and ryan e.b. mruczek.  their version won the best illusion of the year competition in 2014, a few weeks ago.  it’s a brilliant competition whose lead organiser is susanna martinez-conde, and is accumulating a fascinating illusion resource as the ten finalists are added each year.in the movie, as the figure moves up and down the screen, all the circles seem to change size.  yet objectively only the outer ring of circles do so:  the central circle remains exactly the same size throughout.  it’s so vivid it’s hard to believe, but i’ve just added some yellow rails as a track for the central circle.  you can see that the circle always just fits the rails – and they don’t change size.for more info and links on the ebbinghaus illusion (aka titchener circles) see our earlier post on the traditional, static version. ambiguous images, illusion demos with animations, illusions and aesthetics, optical illusions, tessellationsdigital kaleidoscopes – post no. 1 april 23, 2014 david http://www.opticalillusion.net/wp-content/uploads/2014/04/fish4sitebb.mp4everyone loves a kaleidoscope, particularly the ones with a lens at the end, so that as you look through them whilst sweeping the kaleidoscope around, the view becomes a dazzling starburst pattern.  (i find nova magic marble kaleidoscopes are inexpensive ones for kids that work pretty well).   however, real-world kaleidoscopes can only tile the visual field with a limited repertoire of geometric shapes – typically triangles. digitally we can tile with any shape that will tessellate – that is, fill the plane by repetition without gaps or overlaps. as with real-world kaleidoscopes with a lens at the end, each tile can enclose a streaming segment of a visual scene, if you are handy with graphics and 2d animation packages.  if that all sounds a bit puzzling, i think the movie will make it clearer.but then there’s a surprise!  illusions of movement may appear, dependent on figure/ground effects. continue reading → ambiguous images, impossible worlds (inc. staircases), optical illusionsroger shepard’s arc de triomphe revisited december 29, 2013 david in 1990 the psychologist and artist roger shepard published a cartoon version of this effect, captioned “i stand corrected”, in his book mindsights (page 91).  i wanted to try a photo processed version of it and here’s my second attempt.  when i tried before, back in 2008, i somehow couldn’t get my mind round what shepard had done, and produced an even more twisted version.m.c.escher’s lithograph belvedere from 1958 is famous variant on the theme.  subsequent investigators have presented animated 3d versions of it that help explain the effect.my new version is based on a late nineteenth century photochrom postcard.  they were made by a beautiful process that added colour lithographically to black and white photos.  you can see the original in a collection of gorgeous period cards of views from all over the world in the usa library of congress. illusions and aesthetics, tessellationsmamluk interlace september 28, 2013 david i’m fascinated by the way that spectacular aesthetic effects often seem to involve bamboozling our everyday strategies for making visual sense of the world.  this is a beautiful example, a detail of interlace decoration on a 14th century (western dates) mamluk period door in the louvre from the al-maridani mosque in cairo.  (i’ve shown other examples of a role for bamboozled perception in aesthetics in an earlier post, and in the illusions and aesthetics category to the right).as you can begin to see in the image, where i’ve combined the interlace pattern on the door with a schematic analysis of its reflection, the interlace we see in the door is a segment of a rosette pattern that repeats across a wider field.  but that’s not obvious at all when you just see the door.  the artist has not emphasised the lines of the design, but rather the infills – stars and other little geometric tiles.  we’re distracted from grasping the overall geometry by all the assertive, enclosed shapes, with their heavy outlines.  and the overall shapes that do jump out for me are the beautiful curves that run from top to bottom of the image, which also distract attention from the hexagonal geometry of the pattern.  for more analysis of the pattern and the fabrication of the doors, see below, but first, here’s the whole door. continue reading → illusion demos with animations, optical illusions, size-constancy effectsbars and bands – illusory expansion august 16, 2013 david http://www.opticalillusion.net/wp-content/uploads/2013/08/expndbars4bb_f8_hq.mp4when the chevron pattern in the movie is in perspective, so that the bars get thinner and closer together with distance, the bars and the fan of bright bands on them appear to stream past us, as if we were travelling along a tunnel. when the bars are all the same size and equally spaced, so that they don’t show perspective depth cues, the fan of bright bands appears to be expanding. the outer bright bands even look as if they are sliding along the bars.thanks to priscilla heard for the suggestion that the key to the expansion effect is in the absence of perspective cues. if you’d like more on that …. continue reading → ambiguous images, geometric illusions, illusion demos with animations, optical illusionsbarbers’ poles and the aperture problem july 3, 2013 david http://www.opticalillusion.net/wp-content/uploads/2013/07/wedbarb4bb_f8_hq.mp4go back a couple of centuries and there were no chains of shops or malls. in the high street in the uk you would have found the type of shop you were after by looking out for a sign hanging out.  there were signs for pharmacists, tobacconists, pawnbrokers, whatever.  nowadays there’s just one traditional sign still sometimes to be seen – the barber’s pole, as left in the animation.the barber’s sign shows a famous illusion.  the cylinder is rotating horizontally around a vertical axis, but the stripes look as if they are rising – which would be impossible, unless you had some long pole sliding through the cylinder.you can begin to see why in the demo on the right:  focus on the vertical slot and the grating seems to be moving vertically (as in the barber’s pole).  but focus on the horizontal slot and in a moment the grating may seem to move horizontally.  behind the round hole, for me it tends to look as if moving obliquely.want to know more about what’s going on? continue reading → ambiguous images, illusions and aesthetics, optical illusionsaha! may 19, 2013 david some of the best of all illusions in the tradition of rotating heads were designed for advertising in the 1930’s by british artist rex whistler – you really have to take a second look to convince yourself the lower faces are just rotations of the upper ones. he was sadly killed in action in world war two, but the heads were collected in a book of 1979, aha.  he got the idea from some seventeenth century engravings, (reproduced below), which had first appeared in 1671 in a book by polemicist pierre berault. the western, christian world at that time was riven with hatred between catholics and protestants, and these images are an anti catholic salvo, showing a pope (left pair of roundels below) and a cardinal (right pair of roundels below) transforming into devils with rotation.i found these details in two editorials about rotating heads for the journal perception, by perceptual scientist and artist nick wade and colleagues.  check them out for lots more info and images. one is from 2003, the other from 2005, and they are the most authoritative source of information on rotating heads generally.in the 2003 paper nick wade also shows one of the oldest rotating heads we know, a second century ad roman beaker, shown to the right above. it was spotted by christine wade in the hungarian national  museum in budapest.  (photo © christine wade)there are earlier posts on this site about rotating heads, one with father christmas turning into playwright henrik ibsen, another about a tale of nightmare in a hotel. and if your appetite for this stuff is insatiable, look at the more recent post on cartoonist gustave verbeek. posts navigation 1 2 … 13 next → recent posts for ecvp 2016 the “witch ring” illusion: experimental stimuli william wollaston’s gaze illusion a variant on the “witch ring” illusion best illusion of the year competition digital kaleidoscopes – post no. 1 roger shepard’s arc de triomphe revisited mamluk interlace bars and bands – illusory expansion barbers’ poles and the aperture problem aha! cockatoo coming through dark kanizsa triangle stern, smiling and radiant buddha poggendorff switch the watercolour illusion in reverse barrier-grid (or picket-fence) animation the poggendorff with parallels only the watercolour illusion gustave verbeek drunken dionysius archivesaugust 2016october 2015june 2015june 2014april 2014december 2013september 2013august 2013july 2013may 2013april 2013march 2013february 2013january 2013november 2012october 2012september 2012august 2012july 2012may 2012april 2012march 2012january 2012november 2011october 2011september 2011august 2011july 2011june 2011may 2011march 2011january 2011november 2010september 2010august 2010june 2010may 2010january 2010december 2009november 2009october 2009september 2009june 2009may 2009april 2009march 2009february 2009january 2009december 2008november 2008october 2008september 2008august 2008 blogrollakiyoshi kitaoka’s sitebuy stuff!illusion cartoon storymichael bach’s siteonline jigsaw puzzles metalog inentries rsscomments rsswordpress.org illusions and visual special effects – explanations and tutorials ambiguous imagesanimated illusion cartoonsclassic illusion booksgeometric illusionsillusion demos with animationsillusions and aestheticsimpossible worlds (inc. staircases)mini images for your siteoptical illusionsphotoshop cs3 drawing tipssize-constancy effectssoap bubble picturesspecial effectstessellationsthe poggendorff illusion check out our 100 illusion images you can use on your blog, facebook or myspace profiles.you can also use any of the still images on the site (unless third party copyright is indicated) for your own private, non-commercial purposes. visit our shop for illusions and effects beautifully printed for you on posters, clothing and more. illusion books proudly powered by wordpress


Here you find all texts from your page as Google (googlebot) and others search engines seen it.

Words density analysis:

Numbers of all words: 2061

One word

Two words phrases

Three words phrases

the - 9.46% (195)
illusion - 3.06% (63)
and - 2.72% (56)
for - 1.26% (26)
you - 1.21% (25)
with - 1.16% (24)
all - 1.12% (23)
that - 1.12% (23)
illusions - 1.07% (22)
200 - 0.97% (20)
are - 0.92% (19)
out - 0.92% (19)
optical - 0.87% (18)
our - 0.82% (17)
2013 - 0.78% (16)
see - 0.78% (16)
animation - 0.68% (14)
post - 0.68% (14)
one - 0.68% (14)
how - 0.63% (13)
his - 0.63% (13)
ten - 0.63% (13)
right - 0.63% (13)
but - 0.58% (12)
– - 0.58% (12)
can - 0.53% (11)
illusion. - 0.53% (11)
effect - 0.53% (11)
look - 0.53% (11)
from - 0.49% (10)
they - 0.49% (10)
images - 0.49% (10)
david - 0.49% (10)
show - 0.49% (10)
arc - 0.44% (9)
version - 0.44% (9)
may - 0.44% (9)
animations - 0.44% (9)
demo - 0.44% (9)
this - 0.44% (9)
end - 0.44% (9)
were - 0.44% (9)
demos - 0.39% (8)
site - 0.39% (8)
here’s - 0.39% (8)
more - 0.39% (8)
pattern - 0.39% (8)
effects - 0.39% (8)
about - 0.39% (8)
august - 0.39% (8)
world - 0.39% (8)
witch - 0.34% (7)
ring - 0.34% (7)
kaleidoscope - 0.34% (7)
head - 0.34% (7)
2014 - 0.34% (7)
round - 0.34% (7)
2015 - 0.34% (7)
movie - 0.34% (7)
aesthetic - 0.34% (7)
track - 0.34% (7)
september - 0.34% (7)
bars - 0.34% (7)
june - 0.34% (7)
pole - 0.29% (6)
heads - 0.29% (6)
read - 0.29% (6)
which - 0.29% (6)
wollaston - 0.29% (6)
some - 0.29% (6)
rotating - 0.29% (6)
circle - 0.29% (6)
2016 - 0.29% (6)
sign - 0.29% (6)
size - 0.29% (6)
shape - 0.29% (6)
there - 0.29% (6)
book - 0.29% (6)
not - 0.29% (6)
2008 - 0.29% (6)
aesthetics - 0.29% (6)
door - 0.29% (6)
→ - 0.29% (6)
animations, - 0.29% (6)
october - 0.29% (6)
late - 0.29% (6)
year - 0.29% (6)
other - 0.29% (6)
seem - 0.29% (6)
ambiguous - 0.24% (5)
will - 0.24% (5)
below - 0.24% (5)
move - 0.24% (5)
just - 0.24% (5)
when - 0.24% (5)
continue - 0.24% (5)
interlace - 0.24% (5)
them - 0.24% (5)
reading - 0.24% (5)
 the - 0.24% (5)
way - 0.24% (5)
bands - 0.24% (5)
own - 0.24% (5)
appear - 0.24% (5)
your - 0.24% (5)
kaleidoscopes - 0.24% (5)
photo - 0.24% (5)
 i - 0.24% (5)
century - 0.24% (5)
april - 0.24% (5)
geometric - 0.24% (5)
face - 0.24% (5)
bright - 0.24% (5)
long - 0.19% (4)
best - 0.19% (4)
july - 0.19% (4)
illusions, - 0.19% (4)
artist - 0.19% (4)
over - 0.19% (4)
it’s - 0.19% (4)
through - 0.19% (4)
even - 0.19% (4)
“witch - 0.19% (4)
visual - 0.19% (4)
shop - 0.19% (4)
beautiful - 0.19% (4)
tile - 0.19% (4)
images, - 0.19% (4)
december - 0.19% (4)
cartoon - 0.19% (4)
shepard - 0.19% (4)
ones - 0.19% (4)
ring” - 0.19% (4)
competition - 0.19% (4)
expansion - 0.19% (4)
static - 0.19% (4)
original - 0.19% (4)
now - 0.19% (4)
have - 0.19% (4)
i’ve - 0.19% (4)
wade - 0.19% (4)
each - 0.19% (4)
pair - 0.19% (4)
illusory - 0.19% (4)
use - 0.19% (4)
shows - 0.19% (4)
priscilla - 0.19% (4)
fan - 0.15% (3)
poster - 0.15% (3)
perception - 0.15% (3)
william - 0.15% (3)
first - 0.15% (3)
impossible - 0.15% (3)
man - 0.15% (3)
published - 0.15% (3)
also - 0.15% (3)
along - 0.15% (3)
top - 0.15% (3)
shapes - 0.15% (3)
barber’s - 0.15% (3)
special - 0.15% (3)
heard - 0.15% (3)
set - 0.15% (3)
picture - 0.15% (3)
ecvp - 0.15% (3)
colour - 0.15% (3)
mamluk - 0.15% (3)
stream - 0.15% (3)
gaze - 0.15% (3)
perspective - 0.15% (3)
eyes - 0.15% (3)
had - 0.15% (3)
what - 0.15% (3)
get - 0.15% (3)
roger - 0.15% (3)
second - 0.15% (3)
relation - 0.15% (3)
try - 0.15% (3)
don’t - 0.15% (3)
change - 0.15% (3)
poggendorff - 0.15% (3)
digital - 0.15% (3)
any - 0.15% (3)
visit - 0.15% (3)
info - 0.15% (3)
added - 0.15% (3)
vertical - 0.15% (3)
circles - 0.15% (3)
tradition - 0.15% (3)
only - 0.15% (3)
below) - 0.15% (3)
tracks - 0.15% (3)
was - 0.15% (3)
sideways - 0.15% (3)
variant - 0.15% (3)
there’s - 0.15% (3)
still - 0.15% (3)
earlier - 0.15% (3)
paper - 0.15% (3)
colleague - 0.15% (3)
back - 0.15% (3)
aesthetics, - 0.15% (3)
horizontal - 0.15% (3)
plan - 0.15% (3)
posts - 0.15% (3)
action - 0.1% (2)
triangle - 0.1% (2)
their - 0.1% (2)
aha! - 0.1% (2)
catholic - 0.1% (2)
know - 0.1% (2)
time - 0.1% (2)
books - 0.1% (2)
run - 0.1% (2)
bottom - 0.1% (2)
size-constancy - 0.1% (2)
sliding - 0.1% (2)
stern, - 0.1% (2)
war - 0.1% (2)
watercolour - 0.1% (2)
verbeek - 0.1% (2)
2015june - 0.1% (2)
overall - 0.1% (2)
these - 0.1% (2)
distract - 0.1% (2)
around - 0.1% (2)
focus - 0.1% (2)
would - 0.1% (2)
stuff - 0.1% (2)
horizontally - 0.1% (2)
recent - 0.1% (2)
cylinder - 0.1% (2)
left - 0.1% (2)
unless - 0.1% (2)
check - 0.1% (2)
gustave - 0.1% (2)
traditional - 0.1% (2)
out. - 0.1% (2)
christine - 0.1% (2)
found - 0.1% (2)
… - 0.1% (2)
poles - 0.1% (2)
2003 - 0.1% (2)
problem - 0.1% (2)
source - 0.1% (2)
nick - 0.1% (2)
drawing - 0.1% (2)
two - 0.1% (2)
into - 0.1% (2)
barbers’ - 0.1% (2)
slot - 0.1% (2)
grating - 0.1% (2)
aperture - 0.1% (2)
moving - 0.1% (2)
roundels - 0.1% (2)
geometry - 0.1% (2)
version. - 0.1% (2)
lines - 0.1% (2)
near - 0.1% (2)
society - 0.1% (2)
done - 0.1% (2)
illusionsa - 0.1% (2)
another - 0.1% (2)
shaped - 0.1% (2)
faces - 0.1% (2)
like - 0.1% (2)
expanding - 0.1% (2)
isolated - 0.1% (2)
looking - 0.1% (2)
zone - 0.1% (2)
objectively - 0.1% (2)
quite - 0.1% (2)
bit - 0.1% (2)
corner - 0.1% (2)
take - 0.1% (2)
journal - 0.1% (2)
comment - 0.1% (2)
copy - 0.1% (2)
royal - 0.1% (2)
direction - 0.1% (2)
ebbinghaus - 0.1% (2)
single - 0.1% (2)
search - 0.1% (2)
illusion: - 0.1% (2)
experimental - 0.1% (2)
stimuli - 0.1% (2)
presented - 0.1% (2)
illusion.  - 0.1% (2)
movement - 0.1% (2)
streaming - 0.1% (2)
file - 0.1% (2)
ago. - 0.1% (2)
dots - 0.1% (2)
travelling - 0.1% (2)
appears - 0.1% (2)
wollaston’s - 0.1% (2)
30, - 0.1% (2)
pictures - 0.1% (2)
yet - 0.1% (2)
us, - 0.1% (2)
whilst - 0.1% (2)
new - 0.1% (2)
 it’s - 0.1% (2)
has - 0.1% (2)
white - 0.1% (2)
triomphe - 0.1% (2)
revisited - 0.1% (2)
mind - 0.1% (2)
produced - 0.1% (2)
lithograph - 0.1% (2)
famous - 0.1% (2)
animated - 0.1% (2)
process - 0.1% (2)
period - 0.1% (2)
(inc. - 0.1% (2)
usa - 0.1% (2)
detail - 0.1% (2)
shown - 0.1% (2)
begin - 0.1% (2)
image, - 0.1% (2)
analysis - 0.1% (2)
its - 0.1% (2)
 but - 0.1% (2)
door. - 0.1% (2)
shepard’s - 0.1% (2)
worlds - 0.1% (2)
lead - 0.1% (2)
lens - 0.1% (2)
figure - 0.1% (2)
down - 0.1% (2)
size. - 0.1% (2)
outer - 0.1% (2)
central - 0.1% (2)
same - 0.1% (2)
rails - 0.1% (2)
no. - 0.1% (2)
end, - 0.1% (2)
segment - 0.1% (2)
view - 0.1% (2)
pattern. - 0.1% (2)
 (i - 0.1% (2)
work - 0.1% (2)
real-world - 0.1% (2)
field - 0.1% (2)
is, - 0.1% (2)
fill - 0.1% (2)
enclose - 0.1% (2)
wordpress - 0.1% (2)
of the - 1.12% (23)
in the - 1.12% (23)
on the - 0.68% (14)
with a - 0.63% (13)
and the - 0.53% (11)
optical illusions - 0.49% (10)
at the - 0.44% (9)
to the - 0.39% (8)
illusion demos - 0.39% (8)
demos with - 0.39% (8)
you can - 0.39% (8)
illusions and - 0.34% (7)
with animations, - 0.29% (6)
witch ring - 0.29% (6)
2013 david - 0.24% (5)
and aesthetics - 0.24% (5)
they are - 0.24% (5)
that the - 0.24% (5)
continue reading - 0.24% (5)
reading → - 0.24% (5)
animations, optical - 0.24% (5)
“witch ring” - 0.19% (4)
the right - 0.19% (4)
version of - 0.19% (4)
ambiguous images, - 0.19% (4)
seem to - 0.19% (4)
the bars - 0.19% (4)
the “witch - 0.19% (4)
ring” illusion - 0.19% (4)
ecvp 2016 - 0.15% (3)
for the - 0.15% (3)
all the - 0.15% (3)
the year - 0.15% (3)
heads we - 0.15% (3)
if you - 0.15% (3)
at all - 0.15% (3)
and aesthetics, - 0.15% (3)
bars and - 0.15% (3)
when the - 0.15% (3)
bright bands - 0.15% (3)
out for - 0.15% (3)
the barber’s - 0.15% (3)
look as - 0.15% (3)
→ ambiguous - 0.15% (3)
illusion of - 0.15% (3)
so that - 0.15% (3)
for you - 0.15% (3)
in relation - 0.15% (3)
relation to - 0.15% (3)
the original - 0.15% (3)
variant on - 0.15% (3)
pair of - 0.15% (3)
the eyes - 0.15% (3)
same size - 0.1% (2)
found the - 0.1% (2)
the grating - 0.1% (2)
slot and - 0.1% (2)
through the - 0.1% (2)
if they - 0.1% (2)
to move - 0.1% (2)
track is - 0.1% (2)
→ illusion - 0.1% (2)
there were - 0.1% (2)
2015 david - 0.1% (2)
the aperture - 0.1% (2)
the fan - 0.1% (2)
on that - 0.1% (2)
of bright - 0.1% (2)
appears to - 0.1% (2)
gaze illusion - 0.1% (2)
fan of - 0.1% (2)
poles and - 0.1% (2)
colleague priscilla - 0.1% (2)
effects of - 0.1% (2)
ring” illusion: - 0.1% (2)
gustave verbeek - 0.1% (2)
only the - 0.1% (2)
the poggendorff - 0.1% (2)
watercolour illusion - 0.1% (2)
– illusory - 0.1% (2)
and bands - 0.1% (2)
a variant - 0.1% (2)
william wollaston’s - 0.1% (2)
experimental stimuli - 0.1% (2)
2016 the - 0.1% (2)
the tradition - 0.1% (2)
christine wade - 0.1% (2)
illusion: experimental - 0.1% (2)
nick wade - 0.1% (2)
and artist - 0.1% (2)
the journal - 0.1% (2)
about rotating - 0.1% (2)
of roundels - 0.1% (2)
a book - 0.1% (2)
take a - 0.1% (2)
heads were - 0.1% (2)
in each - 0.1% (2)
the witch - 0.1% (2)
the other - 0.1% (2)
and they - 0.1% (2)
kaleidoscopes – - 0.1% (2)
aesthetics, optical - 0.1% (2)
there’s a - 0.1% (2)
optical illusionsa - 0.1% (2)
post on - 0.1% (2)
the ebbinghaus - 0.1% (2)
info and - 0.1% (2)
don’t change - 0.1% (2)
the circle - 0.1% (2)
the royal - 0.1% (2)
the same - 0.1% (2)
central circle - 0.1% (2)
the outer - 0.1% (2)
on with - 0.1% (2)
the best - 0.1% (2)
my colleague - 0.1% (2)
corner of - 0.1% (2)
geometric illusions, - 0.1% (2)
to take - 0.1% (2)
post no. - 0.1% (2)
lens at - 0.1% (2)
illusory expansion - 0.1% (2)
and in - 0.1% (2)
back in - 0.1% (2)
the pattern - 0.1% (2)
are the - 0.1% (2)
for me - 0.1% (2)
the interlace - 0.1% (2)
analysis of - 0.1% (2)
the image, - 0.1% (2)
see in - 0.1% (2)
begin to - 0.1% (2)
the world - 0.1% (2)
the end, - 0.1% (2)
can see - 0.1% (2)
de triomphe - 0.1% (2)
shepard’s arc - 0.1% (2)
impossible worlds - 0.1% (2)
royal society - 0.1% (2)
here’s an - 0.1% (2)
animation of - 0.1% (2)
a lens - 0.1% (2)
as you - 0.1% (2)
bands – - 0.1% (2)
illusion demos with - 0.39% (8)
demos with animations, - 0.29% (6)
continue reading → - 0.24% (5)
illusions and aesthetics - 0.24% (5)
with animations, optical - 0.24% (5)
“witch ring” illusion - 0.19% (4)
the “witch ring” - 0.19% (4)
reading → ambiguous - 0.15% (3)
illusions and aesthetics, - 0.15% (3)
the year competition - 0.15% (3)
best illusion of - 0.15% (3)
illusion of the - 0.15% (3)
look as if - 0.15% (3)
variant on the - 0.15% (3)
relation to the - 0.15% (3)
in relation to - 0.15% (3)
to the right - 0.15% (3)
to take a - 0.1% (2)
poles and the - 0.1% (2)
illusions, illusion demos - 0.1% (2)
and bands – - 0.1% (2)
the aperture problem - 0.1% (2)
if they are - 0.1% (2)
roger shepard’s arc - 0.1% (2)
in a book - 0.1% (2)
pair of roundels - 0.1% (2)
post no. 1 - 0.1% (2)
of roundels below) - 0.1% (2)
2016 the “witch - 0.1% (2)
of bright bands - 0.1% (2)
digital kaleidoscopes – - 0.1% (2)
ring” illusion: experimental - 0.1% (2)
ecvp 2016 the - 0.1% (2)
– illusory expansion - 0.1% (2)
animation of the - 0.1% (2)
this is a - 0.1% (2)
colleague priscilla heard - 0.1% (2)
→ illusion demos - 0.1% (2)
in each pair - 0.1% (2)
the royal society - 0.1% (2)
corner of the - 0.1% (2)
the witch ring - 0.1% (2)
the same size - 0.1% (2)
reading → illusion - 0.1% (2)
ambiguous images, illusion - 0.1% (2)
kaleidoscopes – post - 0.1% (2)
lens at the - 0.1% (2)
a lens at - 0.1% (2)
“witch ring” illusion: - 0.1% (2)
de triomphe revisited - 0.1% (2)
begin to see - 0.1% (2)
of the pattern - 0.1% (2)
the watercolour illusion - 0.1% (2)

Here you can find chart of all your popular one, two and three word phrases. Google and others search engines means your page is about words you use frequently.

Copyright © 2015-2016 hupso.pl. All rights reserved. FB | +G | Twitter

Hupso.pl jest serwisem internetowym, w którym jednym kliknieciem możesz szybko i łatwo sprawdź stronę www pod kątem SEO. Oferujemy darmowe pozycjonowanie stron internetowych oraz wycena domen i stron internetowych. Prowadzimy ranking polskich stron internetowych oraz ranking stron alexa.