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171:(aka Titchener Circles, 1898) and Obonai square illusion (1954). Sarcone's cross illusion consists of a cross (the test shape) surrounded by sets of squares of distinct size (the inducing shapes). As shown in the diagram, the three blue crosses in fig. 1.a, 1.b and 1.c are exactly the same size; the one on the left (fig. 1.a), however, appears larger. The illusion works even when the small squares completely occlude the blue cross (see fig. 1.c). In conclusion, there isn't always correlation between the size of the surrounding shapes and the relative size perception of the test shape. In fig. 2.a and 2.b, by effect of assimilation, the diagonal red line within the large ellipse seems subjectively longer, but in fact the blue line is objectively the longest of both lines.
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187:, Florida (USA). His optical illusion projects 'Mask of Love' and 'Autokinetic Illusion' were named among the top 10 best optical illusions in the 2011 and 2014 "Best Illusion of the Year Contests", respectively. In 2017, he placed third in the contest for his ‘Dynamic Müller-Lyer Illusion’.
111:(born March 20, 1962) is a visual artist and author who collaborates with educational publications, writing articles and columns on topics related to art, science, and mathematics education. He has contributed to several science magazines, including
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have gone viral on the
Internet. His works were also presented in several national and international television programs, including 'Rai 3' Italy, 'RTL 9 Channel' France, 'TSR 1 Channel' Switzerland, and in the following TV series:
228:(UniFi) has permanently hosted Sarcone's optical art works in the Department of Physics and Astronomy in Sesto Fiorentino. This exhibition, titled “Enlightening Mind”, is freely accessible and organized by the Degree Course in
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a consulting network of experts specializing in improving and enhancing creativity - for which he has been commended with a long list of accolades and awards, including the 2003 Scientific
American
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G. Sarcone has authored and published numerous educational textbooks and illustrated books in
English, French and Italian on brain training and the mechanism of vision. He is the founder of
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Here are two relative size illusions described by
Italian visual researcher Gianni A. Sarcone in 1997 and 2013. The first relative-size illusion called Sarcone's Crosses contradicts
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Amongst other notable projects, he created and designed an “hypnoptical” visual illusion that was used in the logo and institutional signage of the 2014
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in
Mathematics and received recognition in the US from: CNN Headline News, National Council of Teachers of Mathematics (NCTM), and NewScientist.com.
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His joint work, “Moona Lisa”, a mosaic of lunar images that, when viewed from a distance, forms the iconic portrait of
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147:(France). Sarcone has over 30 years of experience as a designer and researcher in the areas of visual creativity,
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invented in 1999 by G. Sarcone that blends the words ‘hypnotical’ and ‘optical’ together.
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682:- 3D illusions pack: All You Need to Build 50 Great Illusions, Carlton Books, UK, 2014,
1202:(Archimedes' Visual Illusion Games), China Friendship Publishing Company, China, 2007,
427:, mixed media / collage, 76 x 76 cm, Museum of Illusions, Kuala Lumpur (Malaysia).
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by academic institutions, Sarcone was invited to serve as a juror at the Third Annual "
209:(APOD) twice: on October 16, 2021, and again on September 14, 2024, in celebration of
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1502:- An exhibition at the University of Florence dedicated to optical illusions.
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Fantastic
Optical Illusions: More Than 150 Deceptive Images and Visual Tricks
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475:, mixed media, 122 x 122 cm, Museum of Illusions, Ljubljana (Slovenia).
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382:‘Beyond Production’ PTY LTD (Australia): "Wild But True" – Season 1 (2014).
459:, mixed media, 70 x 70 cm, Museum of Illusions, Ljubljana (Slovenia).
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Op art, optical illusions, visual creativity, and recreational mathematics
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Impossible
Colouring Book: Can You Colour These Amazing Visual Illusions?
495:), mixed media, 122 x 122 cm, Private collection, Florence (Italy).
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1215:(Optical illusions), China Friendship Publishing Company, China, 2007,
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The
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Le
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379:‘National Geographic Television’ (US): "Brain Games Science" (2014).
1027:(Drawing Optical Illusions), Art-Rodnik, Russian Federation, 2013,
411:), photograph, 66 x 91 cm, Private collection, Paris (France).
1014:(Amazing Visual Illusions), Art-Rodnik, Russian Federation, 2013,
897:(135 Mysterious Optic Artworks to Solve), Sogen-Sha, Japan, 2015,
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G. Sarcone is the author (and co-author) of the following books:
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Optical Illusions: An Eye-Popping Extravaganza of Visual Tricks
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1621:, for the communication of mathematics to the general public.
988:(The World of Visual Illusions), Qingdao Shi, China, 2013,
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Impossible Folding Puzzles and Other Mathematical Paradoxes
1645:, Best illusions: Masked face conceals a kiss (May 2011).
1354:, Sarcone’s column in Focus Junior magazine (June 2014).
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Sarcone has practiced and continues to practice various
1092:, Verlag an der Este, Germany, 2012, Artikel-Nr.: 019435
975:(Amazing Visual Illusions), Qingdao Shi, China, 2013,
1079:, Deltas Centrale uitgeverij, The Netherlands, 2012,
1368:, Sarcone’s column in Tangente magazine (June 2013).
1425:, nominated top 10 Best Illusions of the Year 2014.
1411:, nominated top 10 Best Illusions of the Year 2011.
741:, Tehniška Založba Slovenije D.d., Slovenia, 2019,
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869:Vertigo: 50 Schwindelerregende Optische Illusionen
1830:G. Sarcone’s biography and bibliography on Amazon
1840:Sarcone’s autokinetic pictures on Saatchi online
1557:. Royal Society Young People's Book Prize 2018.
1124:, Circulo de Lectores Barcelona, Spain, 2010,
1077:De wonderlijke wereld van de optische illusies
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1783:These Patterns Move But It’s All An Illusion
1098:, Uitgeverij Atrium, The Netherlands, 2011,
309:Royal Society Young People's Book Prize 2018
1163:, Tosa Verlagsgesellschaft, Germany, 2008,
1040:, Kustannusosakeyhtiö Nemo, Finland, 2013,
910:, Editorial HISPANO EUROPEA, Spain, 2014,
780:, Lantaarn Publishers, Netherlands, 2019,
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1571:. Best Illusion of the Year Contest 2019.
1543:. Best Illusion of the Year Contest 2017.
1529:. Best Illusion of the Year Contest 2014.
1515:. Best Illusion of the Year Contest 2011.
1109:L’étrange univers des illusions d’optique
949:, Editions Ça m’intéresse, France, 2014,
1633:that Archimedes Laboratory has received.
1395:Best Visual Illusion of the Year Contest
601:How to draw incredible optical illusions
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1820:2014 Best Visual Illusions of the Year
1815:2011 Best Visual Illusions of the Year
1797:G. Sarcone's autokinetic illusions on
1267:, Edizioni La Meridiana, Italy, 2005,
1176:, Edizioni La Meridiana, Italy, 2009,
908:Libro para colorear figuras imposibles
617:, National Geographic Kids, US, 2015,
313:Royal Society Prizes for Science Books
1825:'Mask of Love' illusion by G. Sarcone
1293:, Editions Yva Peyret, France, 1995,
767:, Ventus Libro Kiadó, Hungary, 2019,
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1643:“Short Sharp Science”, New Scientist
1280:, Editions Archimède, France, 2002,
1278:L’Almanach du Mathématicien en herbe
707:Non-fiction books in other languages
216:Since May 16, 2022, in honor of the
211:International Observe the Moon Night
1835:Sarcone’s works on Artstack gallery
1381:. Sterling Publishing, 2002, p. 38.
1137:, Editorial Libsa Sa, Spain, 2010,
715:, Editorial Brúixola, Spain, 2020,
363:Some of Sarcone's artworks such as
1111:, Editions Fleurus, France, 2011,
1001:, Editions Fleurus, France, 2013,
175:Considered a leading authority on
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1761:Best Illusion of the Year Contest
1241:, BZZTOH, The Netherlands, 2006,
669:, Arcturus Publishing, UK, 2014,
329:Best Illusion of the Year Contest
297:Best Illusion of the Year Contest
281:Best Illusion of the Year Contest
265:Best Illusion of the Year Contest
181:Best Illusion of the Year Contest
1488:- The Moona Lisa selected again.
1254:, France Loisirs, France, 2006,
1161:Fantastische Optische Illusionen
1150:, Bassermann F., Germany, 2009,
1090:Unglaubliche Optische Illusionen
962:, Editions Bravo, Canada, 2014,
936:, Ça m’intéresse, France, 2014,
793:, Quarto (Nobel), Brazil, 2018,
728:, Editorial Bruño, Spain, 2020,
695:, Dover Publications, US, 2014,
656:, Dover Publications, US, 2014,
643:, Imagine Publishing, US, 2014,
603:, Imagine Publishing, US, 2015,
522:Recent published works (2014-20)
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1096:Spectaculaire Optische Illusies
1066:, Editions Pole, France, 2012,
1012:Удивительные оптические иллюзии
934:Incroyables Illusions d’Optique
871:, Moses Verlag, Germany, 2016,
713:Les millors il·lusions òptiques
1582:Sarcone’s partial bibliography
1541:"Dynamic Müller-Lyer Illusion"
1291:La Couleur dans tous ses états
1053:, Ars Edition, Germany, 2013,
884:, Ars Edition, Germany, 2016,
832:, Kyouikugageki, Japan, 2018,
806:, Ars Edition, Germany, 2018,
765:Varázslatos optikai csalódások
587:You Can't Possibly Color This!
325:Best Illusion of the Year 2019
293:Best Illusion of the Year 2017
277:Best Illusion of the Year 2014
261:Best Illusion of the Year 2011
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1329:), and holds a black belt in
1252:Nouvelles Illusions d’Optique
1135:Fantasticas ilusiones opticas
960:Illusions - Coloriage Créatif
754:, Booksmile, Portugal, 2019,
726:Las mejores ilusiones ópticas
589:, Moondance Press, US, 2017,
1715:Sarcone’s black belt session
1436:Dynamic Müller-Lyer Illusion
1064:Pliages, découpages et magie
923:, Readme.fi, Finland, 2014,
575:, QED Publishing, UK, 2017,
207:Astronomy Picture of the Day
1228:, Weltbild, Germany, 2006,
1189:, Weltbild, Germany, 2008,
845:, Ordalaget, Sweden, 2018,
507:Gianni Sarcone, 1997-2021,
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680:Make Your Own 3D Illusions
630:, Carlton Kids, UK, 2014,
218:International Day of Light
192:Grec Festival of Barcelona
1604:Open Education Consortium
1379:Dazzling Optical Illusion
1025:Рисуем оптические иллюзии
947:50 Illusions d’Optique 3D
819:, Fleurus, France, 2018,
559:Amazing Optical Illusions
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1756:Recreational mathematics
1751:Thinking outside the box
1555:"Optical illusions book"
1187:Neue Optische Illusionen
1038:Kiehtovat Optiset Harhat
882:Optische Täuschungen XXL
858:, Armenia, Italy, 2018,
149:recreational mathematics
78:Visual artist and writer
1860:Italian science writers
1855:English science writers
1486:APOD: 2024 September 14
1239:Niewe Optische Illusies
628:Super Optical Illusions
405:The Other Face of Paris
365:The Other Face of Paris
1599:Archimedes’ Laboratory
1527:"Autokinetic Illusion"
1377:Sarcone & Waeber,
641:Hidden Picture Puzzles
487:Gianni Sarcone, 2013,
471:Gianni Sarcone, 2011,
455:Gianni Sarcone, 1997,
439:Gianni Sarcone, 2003,
423:Gianni Sarcone, 2001,
403:Gianni Sarcone, 1998,
359:Media and broadcasting
226:University of Florence
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1474:APOD: 2021 October 16
1365:Illusions et trucages
561:, Carlton, UK, 2018,
547:, Carlton, UK, 2019,
545:Ultimate Eye Twisters
533:, Carlton, UK, 2020,
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1631:Accolades and awards
1422:Autokinetic Illusion
1148:Optische Täuschungen
986:图有玄机 : 挑战眼力的错视图
973:图中奥秘 : 挑战脑力的错视图
1685:Sarcone’s illusion
1657:Other Face of Paris
1569:"Magic Tic-Tac-Toe"
1448:"Hypnoptical" is a
1351:Il Club della Magia
1226:Optische Illusionen
1051:Optische Illusionen
843:Optiska illusioner
817:Illusions d’optique
804:Optische Illusionen
343:Educational project
169:Ebbinghaus illusion
1805:Archimedes-lab.org
1462:Grec Festival 2014
615:Xtreme Illusions 2
353:Sci/Tech Web Award
349:Archimedes-lab.org
201:, was featured as
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135:Bocconi University
51:Vevey, Switzerland
1499:Enlightening Mind
1476:- The Moona Lisa.
1122:Ilusiones Opticas
1046:978-952-240-195-3
1033:978-5-4449-0050-5
1020:978-5-4449-0048-2
921:3D Optiset Harhat
856:Illusioni ottiche
778:Optische illusies
623:978-1-4263-1974-7
573:Optical Illusions
493:Mystic Flying Bat
425:Master of Numbers
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336:Top Ten Finalist
288:Top Ten Finalist
272:Top Ten Finalist
240:Honors and awards
177:visual perception
153:educational games
109:Gianni A. Sarcone
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47:(age 62)
45:20 March 1962
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1731:Neuroscience
1717:, June 2015.
1710:
1702:Mask of Love
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895:謎解き錯視 傑作135選
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114:Focus Junior
112:
108:
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1875:1962 births
1174:FantaLogica
141:(USA), and
139:Brain Games
57:Nationality
1849:Categories
1700:Sarcone’s
1602:, is part
1337:References
1323:Kickboxing
1286:2844690254
1273:8889197560
1265:MateMagica
1260:2744192368
1247:9045304732
1234:3828921264
1195:3828952798
1182:8861530923
1169:3850031926
1156:380942398X
1143:8466221255
1130:8467237414
1072:2848841656
1059:3760791301
1007:2215147407
968:2896701729
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916:8425521106
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890:3845816007
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838:4774621277
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734:846962721X
721:8499062962
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595:1633223515
581:1784938475
567:1787391639
553:1783124482
539:178739235X
509:Moona Lisa
489:Mystic Bat
473:Apparition
183:" held in
41:1962-03-20
1799:Scene 360
1331:Taekwondo
1200:阿基米德视幻觉游戏
234:Optometry
199:Mona Lisa
137:(Italy),
129:(Italy),
125:(Italy),
117:(Italy),
1588:catalog.
1586:WorldCat
185:Sarasota
144:Tangente
1327:Jujutsu
256:Result
91:Website
61:Italian
1736:Op art
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230:Optics
224:, the
222:UNESCO
1616:2003
1584:, in
830:錯視の魔術
491:(aka
407:(aka
247:Award
123:CICAP
119:Query
1313:and
1295:ISBN
1282:ISBN
1269:ISBN
1256:ISBN
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1230:ISBN
1217:ISBN
1204:ISBN
1191:ISBN
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1126:ISBN
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1081:ISBN
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1042:ISBN
1029:ISBN
1016:ISBN
1003:ISBN
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912:ISBN
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730:ISBN
717:ISBN
697:ISBN
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632:ISBN
619:ISBN
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577:ISBN
563:ISBN
549:ISBN
535:ISBN
333:2019
320:Won
317:2018
304:Won
301:2017
285:2014
269:2011
253:Year
232:and
203:NASA
151:and
100:.com
35:Born
1393:of
1213:视幻觉
367:or
205:’s
96:www
1851::
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121:-
39:(
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