{"id":5919,"date":"2017-04-05T19:03:13","date_gmt":"2017-04-05T19:03:13","guid":{"rendered":"http:\/\/demos.swarthmore.edu\/physics\/?p=5919"},"modified":"2024-01-19T19:10:40","modified_gmt":"2024-01-19T19:10:40","slug":"einstein-illusion","status":"publish","type":"post","link":"https:\/\/demos.swarthmore.edu\/physics\/2017\/04\/einstein-illusion\/","title":{"rendered":"Einstein Illusion"},"content":{"rendered":"<p>&nbsp;<\/p>\n<p><a href=\"http:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/04\/ein-5.jpg\" rel=\"attachment wp-att-5917\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-5917 aligncenter\" src=\"http:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/04\/ein-5-300x169.jpg\" alt=\"ein 5\" width=\"485\" height=\"273\" srcset=\"https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/04\/ein-5-300x169.jpg 300w, https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/04\/ein-5-768x432.jpg 768w, https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/04\/ein-5-1024x576.jpg 1024w, https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/04\/ein-5-772x434.jpg 772w, https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/04\/ein-5-624x351.jpg 624w, https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/04\/ein-5.jpg 2038w\" sizes=\"(max-width: 485px) 100vw, 485px\" \/><\/a><\/p>\n<p>Is the mask in the above image concave or convex? Strangely, it appears convex (sticking out towards you) even when viewed from the concave side. Even more strange: the face appears to turn and follow you as you view it from different angles.<\/p>\n<p><a href=\"http:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/04\/ein-2.jpg\" rel=\"attachment wp-att-5914\"><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-5914 aligncenter\" src=\"http:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/04\/ein-2-300x169.jpg\" alt=\"ein 2\" width=\"484\" height=\"273\" srcset=\"https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/04\/ein-2-300x169.jpg 300w, https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/04\/ein-2-768x432.jpg 768w, https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/04\/ein-2-1024x576.jpg 1024w, https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/04\/ein-2-772x434.jpg 772w, https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/04\/ein-2-624x351.jpg 624w, https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/04\/ein-2.jpg 2038w\" sizes=\"(max-width: 484px) 100vw, 484px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/04\/ein-4.jpg\" rel=\"attachment wp-att-5916\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-5916 aligncenter\" src=\"http:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/04\/ein-4-300x169.jpg\" alt=\"ein 4\" width=\"485\" height=\"273\" srcset=\"https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/04\/ein-4-300x169.jpg 300w, https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/04\/ein-4-768x432.jpg 768w, https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/04\/ein-4-1024x576.jpg 1024w, https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/04\/ein-4-772x434.jpg 772w, https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/04\/ein-4-624x351.jpg 624w, https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/04\/ein-4.jpg 2038w\" sizes=\"(max-width: 485px) 100vw, 485px\" \/><\/a><\/p>\n<p>Below is a profile view of the mask.<\/p>\n<p><a href=\"http:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/04\/ein-3.jpg\" rel=\"attachment wp-att-5915\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-5915 aligncenter\" src=\"http:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/04\/ein-3-300x169.jpg\" alt=\"ein 3\" width=\"488\" height=\"275\" srcset=\"https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/04\/ein-3-300x169.jpg 300w, https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/04\/ein-3-768x432.jpg 768w, https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/04\/ein-3-1024x576.jpg 1024w, https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/04\/ein-3-772x434.jpg 772w, https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/04\/ein-3-624x351.jpg 624w, https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/04\/ein-3.jpg 2038w\" sizes=\"(max-width: 488px) 100vw, 488px\" \/><\/a><\/p>\n<p>Illusion works best when mask is illuminated from behind.<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp; Is the mask in the above image concave or convex? Strangely, it appears convex (sticking out towards you) even when viewed from the concave side. Even more strange: the face appears to turn and follow you as you view it from different angles. Below is a profile view of the mask. Illusion works best &hellip; <a href=\"https:\/\/demos.swarthmore.edu\/physics\/2017\/04\/einstein-illusion\/\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Einstein Illusion<\/span><\/a><\/p>\n","protected":false},"author":4,"featured_media":5917,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10,57,62],"tags":[629,630,628,627],"_links":{"self":[{"href":"https:\/\/demos.swarthmore.edu\/physics\/wp-json\/wp\/v2\/posts\/5919"}],"collection":[{"href":"https:\/\/demos.swarthmore.edu\/physics\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/demos.swarthmore.edu\/physics\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/demos.swarthmore.edu\/physics\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/demos.swarthmore.edu\/physics\/wp-json\/wp\/v2\/comments?post=5919"}],"version-history":[{"count":4,"href":"https:\/\/demos.swarthmore.edu\/physics\/wp-json\/wp\/v2\/posts\/5919\/revisions"}],"predecessor-version":[{"id":5923,"href":"https:\/\/demos.swarthmore.edu\/physics\/wp-json\/wp\/v2\/posts\/5919\/revisions\/5923"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/demos.swarthmore.edu\/physics\/wp-json\/wp\/v2\/media\/5917"}],"wp:attachment":[{"href":"https:\/\/demos.swarthmore.edu\/physics\/wp-json\/wp\/v2\/media?parent=5919"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/demos.swarthmore.edu\/physics\/wp-json\/wp\/v2\/categories?post=5919"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/demos.swarthmore.edu\/physics\/wp-json\/wp\/v2\/tags?post=5919"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}