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The edition includes publication and translation credits, copyright and printing information, and introduces optical illusions as pictures that deceive perception through eye function, perspective, and brain interpretation. It explains blind spots and offers an example showing circles appearing oval when combined with slanted-line fields.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":35,"@type":76,"position":81},"https://docshare.wps.com/document/healthcare/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/the-worlds-best-optical-illusions-state-and-instructional-materials-for-school-district-textbook-use/439901/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/the-worlds-best-optical-illusions-state-and-instructional-materials-for-school-district-textbook-use/439901.png","ImageObject",300,407,{"name":92,"@type":93},"Rowan","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-11-06","2026-09-29",true,{"@type":102,"interactionType":103,"userInteractionCount":24},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What are the rules for pupils regarding the issued textbook pages?","Question",{"text":112,"@type":113},"Pupils must not write on any page or mark any part of the textbook in any way, except for consumable textbooks. The guidance emphasizes proper handling of the issued book.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How should the condition of the textbook be recorded?",{"text":117,"@type":113},"The textbook condition should be recorded using the categories New, Good, Fair, Poor, and Bad.",{"name":119,"@type":110,"acceptedAnswer":120},"Why do optical illusions happen according to the text?",{"text":121,"@type":113},"Optical illusions occur because the eyes and the brain interact: depending on light, viewing angle, and how the picture is drawn, the brain interprets impressions and may “correct” what the eyes cannot fully explain.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},439901,1793140868,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":34,"category_name":35,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":24,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":139,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":144,"read_time":145,"preview_page_count":4},1099514067415,"https://ap-avatar.wpscdn.com/avatar/100002539d78ffe74a7?x-image-process=image/resize,m_fixed,w_180,h_180&k=1779092875211072502","# The\n\nWORLDSRTS个D  \nUPTICALLLUSIONS  \n Charles H.Paraquin  \nMusgoave   \n\n| 7012443  \u003Cbr>THIS BOOK IS  \u003Cbr>STATE.  \u003Cbr>PROVINCE  \u003Cbr>ALPINE ISD TEXTBOOK  \u003Cbr>COUNTY  \u003Cbr>PARISH  \u003Cbr>to the lelt as  \u003Cbr>SCHOOL DISTRICT  \u003Cbr>instrucied  \u003Cbr>OTHER   |  |  |\n| --- | --- | --- |\n| Usod  \u003Cbr>ISSUED TO   | CONDITION   |  |\n|  | ISSUED   | RETURNED   |\n|  |  |  |\n\nPUPILS to whom this textbook is issued must not write on any pageor mark any part of it in any way,consumable textbooks excepted.  \n1.Teachers should see that the pupirs name is clearly writlen in ink in the spoces above inevery book issued.  \n2.The following fems should be used in recording the condition of the book New;Good;Fair;Poor;Bad.  \n\n| nATe  \u003Cbr>6iIE   | BORROwER's NAME   |  |\n| --- | --- | --- |\n|  |  |  |\n|  |  |  |\n|  |  |  |\n|  |  |  |\n|  |  |  |\n|  |  |  |\n|  |  |  |\n|  |  |  |\n|  |  |  |\n|  |  |  |\n\nThe  \nHARCOURT BRACE &COMPANY  \nOrlando Atlanta Austin Boston San Francisco Chicago Dallas New YorkToronto London  \nTranslated by Paul Kuttner  \nThis edition is published by specialarrangement with Sterling PublishingCo.,Inc.  \nGrateful acknowledgment is made toSterling Publishing Co.,Inc.,387 ParkAvenue South,New York,NY 10016,forpermission to reprint The World's BestOptical Ilusions by Charles H.Paraquin,translated by Paul Kuttner.Originallypublished in hardcover under the title EyeTeasers.◎1977 by Sterling Publishing Co.,Inc.Original edition published in WestGermany under the title Schummelbilder.◎ 1975 by Otto Maier Verlag Ravensburg.  \nPrinted in the United States of America  \nISBN 0-15-302230-2  \n34567891001197969594  \nOptical illusions are pictures that play tricks onyour eyes and baffle your perception.They are not theresult of faulty vision or psychic suggestion.Dependingon light,viewing angle,or the way the picture is drawn,we may see things that aren't there—and often don'tsee what's right under our nose.Why does it happen?  \nSometimes the answer lies in the way our eyes work.When we use both eyes,we see an object from twoslightly set-apart angles.Each one registers a differentview.If we use only one eye,look what happens:  \nClose your left eye.Keep your right eye focussed onthe dog and move the book back and forth in front of you.At one point,the cat disappears completely.You havejust found your blind spot.Everyone has one.It is thespot where the optic nerve cord leaves your eye,andthere are no nerve cells to register an image.If you useboth eyes as you look at the dog,you won't have a blindspot.The image from your left eye willmake up for theblank in your right.  \nThe shortcomings of our vision explain some typesof optical illusions,but not all of them.Our eyes gatherimpressions,but it is the brain that interprets them.Andthe brain is always trying to make sense out of what itsees.So in spite of the fact that we know how per-spective works,we go to the theatre or the movies andimagine that we're in a different world,tricked by astage set and special effects.We watch magic acts andbelieve what reflecting mirrors show us.Illusion iseverywhere—in art and architecture,in fashion andadvertising,in the street and on television,even in thesupermarket.If our eyes see something that the braincan't figure out,our minds \"correct\"the picture auto-matically.  \nHere is another illusion:  \n2  \nThe box in the first picture contains an ordinary circle.The second box contains a field of slanted lines.Put themtogether and look what happens.The circle appears tobecome an oval and the box seems to be completelylop-sided.Test them with a ruler and compass.You'll seethat they are exactly the same as they were before.  \nThe human eye isn't as perfect as a camera lens,butthat doesn't mean it is defective—just the opposite.Itsadaptability is its strongpoint.In the semi-dark,for","cbCair1LqRLbvDOC","https://ap.wps.com/l/cbCair1LqRLbvDOC","pdf",2757118,104,"English","# Textbook issuance rules\n## Prohibited writing and marking\n## Recording condition (New, Good, Fair, Poor, Bad)\n## Borrower record table\n# Publication and edition credits\n# Introduction to optical illusions\n## How eyes and brain interpret images\n## Blind spot demonstration\n# Example illusion with circles and slanted lines","[{\"question\":\"What are the rules for pupils regarding the issued textbook pages?\",\"answer\":\"Pupils must not write on any page or mark any part of the textbook in any way, except for consumable textbooks. The guidance emphasizes proper handling of the issued book.\"},{\"question\":\"How should the condition of the textbook be recorded?\",\"answer\":\"The textbook condition should be recorded using the categories New, Good, Fair, Poor, and Bad.\"},{\"question\":\"Why do optical illusions happen according to the text?\",\"answer\":\"Optical illusions occur because the eyes and the brain interact: depending on light, viewing angle, and how the picture is drawn, the brain interprets impressions and may “correct” what the eyes cannot fully explain.\"}]","The World's Best Optical Illusions - State and Instructional Materials for School District Textbook Use | PDF",1790690498,262]