{"id":3163,"date":"2026-10-11T16:55:21","date_gmt":"2026-10-11T03:55:21","guid":{"rendered":"https:\/\/iypt.org.nz\/?page_id=3163"},"modified":"2026-10-12T21:18:05","modified_gmt":"2026-10-12T08:18:05","slug":"problem-1-pinhole-sunglasses","status":"publish","type":"page","link":"https:\/\/iypt.org.nz\/?page_id=3163","title":{"rendered":"Problem 1: Pinhole Sunglasses"},"content":{"rendered":"\n<p class=\"has-text-align-center is-style-default has-x-large-font-size wp-block-paragraph\">Can a sheet full of tiny holes cut the glare and sharpen blurry vision?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This problem explores some well-known optical physics that some medical practitioners use for patients.<\/p>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">IYPT problem in full<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">This problem is number 1 of 17 for IYPT 2027.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>&#8220;Investigate the optimal arrangement of pinholes in an opaque film to produce sunglasses that reduce light intensity and help correct short-sightedness.&#8221;<\/em><\/p>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Specialist equipment<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">No specialist equipment is needed for this experiment.<\/p>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Safety First!<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Pinhole sunglasses are not suitable for a lot of everyday activities. They restrict your field of vision which can be dangerous and provide no protection for your eyes from bright light sources.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Do not use the glasses when driving or operating machinery<\/li>\n\n\n\n<li>NEVER look directly at bright lights or the sun through your pinhole glasses<\/li>\n\n\n\n<li>Pinhole sunglasses should not be used to replace prescription glasses.<\/li>\n\n\n\n<li>Artificial lights can become hot. take care not to burn yourself. <\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Can a sheet full of tiny holes cut the glare and sharpen blurry vision? This problem explores some well-known optical physics that some medical practitioners use for patients. IYPT problem in full This problem is number 1 of 17 for IYPT 2027. &#8220;Investigate the optimal arrangement of pinholes in an opaque film to produce sunglasses [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3166,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-3163","page","type-page","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/iypt.org.nz\/index.php?rest_route=\/wp\/v2\/pages\/3163","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/iypt.org.nz\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/iypt.org.nz\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/iypt.org.nz\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/iypt.org.nz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3163"}],"version-history":[{"count":7,"href":"https:\/\/iypt.org.nz\/index.php?rest_route=\/wp\/v2\/pages\/3163\/revisions"}],"predecessor-version":[{"id":3302,"href":"https:\/\/iypt.org.nz\/index.php?rest_route=\/wp\/v2\/pages\/3163\/revisions\/3302"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/iypt.org.nz\/index.php?rest_route=\/wp\/v2\/media\/3166"}],"wp:attachment":[{"href":"https:\/\/iypt.org.nz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3163"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}