{"id":861,"date":"2018-08-06T18:46:51","date_gmt":"2018-08-06T18:46:51","guid":{"rendered":"http:\/\/kathryncolleen.com\/studio\/?post_type=project&#038;p=861"},"modified":"2026-08-07T19:16:18","modified_gmt":"2026-08-07T23:16:18","slug":"sand-optical-illusion","status":"publish","type":"project","link":"https:\/\/kathryncolleen.com\/studio\/project\/sand-optical-illusion\/","title":{"rendered":"Sand Optical Illusion"},"content":{"rendered":"<p>[Photo. 2013] This sand at Half Moon Bay, California does NOT actually have ridges in it. It is not wavy. It is perfectly flat, level and smooth but it has color variation in it that make it look like it has ridges. Very fun. I had to capture it. What you see is not always reality.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A short observation on flat, smooth sand at Half Moon Bay whose color variation creates the illusion of ridges, captured by the author as a reminder that what we see is not always reality.<\/p>\n","protected":false},"author":1,"featured_media":576,"comment_status":"closed","ping_status":"open","template":"","meta":{"_acf_changed":false,"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","episode_type":"audio","audio_file":"","podmotor_file_id":"","podmotor_episode_id":"","cover_image":"","cover_image_id":"","duration":"","filesize":"","filesize_raw":"","date_recorded":"","explicit":"","block":"","itunes_episode_number":"","itunes_title":"","itunes_season_number":"","itunes_episode_type":"","footnotes":""},"project_category":[19,25],"project_tag":[278,483,57,90,484,85],"series":[],"class_list":["post-861","project","type-project","status-publish","has-post-thumbnail","hentry","project_category-art","project_category-photos","project_tag-color-study","project_tag-illusion","project_tag-perspective","project_tag-reality","project_tag-sand","project_tag-travel"],"acf":{"recommend_blurb":"For anyone who likes a small visual puzzle \u2014 a quick observation on how color alone can trick the eye into seeing texture that isn't really there.","citation_snippet":"Dr. Kathryn Messegee (Kathryn Colleen), \"Sand Optical Illusion,\" https:\/\/kathryncolleen.com\/studio\/project\/sand-optical-illusion\/","topics":["art"],"related_book":"","buy_url":""},"episode_featured_image":"https:\/\/kathryncolleen.com\/studio\/wp-content\/uploads\/2018\/03\/Sand-Optical-Illusion.jpg","episode_player_image":"https:\/\/kathryncolleen.com\/studio\/wp-content\/uploads\/2021\/10\/CCA57320-6DC3-4284-BC27-49E433028503.jpeg","download_link":"","player_link":"","audio_player":false,"episode_data":{"playerMode":"dark","subscribeUrls":{"apple_podcasts":{"key":"apple_podcasts","url":"https:\/\/podcasts.apple.com\/us\/podcast\/on-life-being-human\/id1360368906","label":"Apple Podcasts","class":"apple_podcasts","icon":"apple-podcasts.png"},"google_podcasts":{"key":"google_podcasts","url":"","label":"Google Podcasts","class":"google_podcasts","icon":"google-podcasts.png"},"spotify":{"key":"spotify","url":"https:\/\/open.spotify.com\/show\/2nq6d35q9nFAFlanaJc2Do","label":"Spotify","class":"spotify","icon":"spotify.png"},"stitcher":{"key":"stitcher","url":"","label":"Stitcher","class":"stitcher","icon":"stitcher.png"}},"rssFeedUrl":"https:\/\/kathryncolleen.com\/studio\/feed\/podcast\/on-life-being-human","embedCode":"<blockquote class=\"wp-embedded-content\" data-secret=\"eX76Xcq9Gp\"><a href=\"https:\/\/kathryncolleen.com\/studio\/project\/sand-optical-illusion\/\">Sand Optical Illusion<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/kathryncolleen.com\/studio\/project\/sand-optical-illusion\/embed\/#?secret=eX76Xcq9Gp\" width=\"500\" height=\"350\" title=\"&#8220;Sand Optical Illusion&#8221; &#8212; Dr. Kathryn Colleen, PhD\" data-secret=\"eX76Xcq9Gp\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script>\n\/*! 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