{"id":3719,"date":"2014-09-30T17:50:35","date_gmt":"2014-09-30T15:50:35","guid":{"rendered":"http:\/\/www.arnoschrauwers.nl\/weblog\/?p=3719"},"modified":"2014-09-30T17:50:35","modified_gmt":"2014-09-30T15:50:35","slug":"een-gat-in-de-hand","status":"publish","type":"post","link":"https:\/\/www.arnoschrauwers.nl\/weblog\/30\/09\/2014\/een-gat-in-de-hand\/","title":{"rendered":"Een gat in de hand"},"content":{"rendered":"<p><a href=\"http:\/\/www.arnoschrauwers.nl\/weblog\/wp-content\/uploads\/Onzichtbare-hand.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright size-medium wp-image-3720\" src=\"http:\/\/www.arnoschrauwers.nl\/weblog\/wp-content\/uploads\/Onzichtbare-hand-300x200.jpg\" alt=\"Onzichtbare hand\" width=\"300\" height=\"200\" srcset=\"https:\/\/www.arnoschrauwers.nl\/weblog\/wp-content\/uploads\/Onzichtbare-hand-300x200.jpg 300w, https:\/\/www.arnoschrauwers.nl\/weblog\/wp-content\/uploads\/Onzichtbare-hand-450x300.jpg 450w, https:\/\/www.arnoschrauwers.nl\/weblog\/wp-content\/uploads\/Onzichtbare-hand.jpg 630w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a>Het is een truc met vier lenzen en dan lijkt het alsof je dwars door, bijvoorbeeld, je hand de achtergrond kunt zien en nog wel vanuit elke hoek. Je moet dan wel door die lenzen blijven kijken. Die breken het licht, waardoor dat om het storende voorwerp (in ons voorbeeld de hand) wordt heen geleid. Het is dus geen mantel van Harry Potter. De universiteit van Rochester, <a href=\"http:\/\/www.rochester.edu\/newscenter\/watch-rochester-cloak-uses-ordinary-lenses-to-hide-objects-across-continuous-range-of-angles-70592\/\">waar ze met de opzet experimenteerden,<\/a>\u00a0geeft ook een handleiding voor het zelf maken van zo&#8217;n onzichtbaarheidsopstelling. Het enige wat je daarvoor nodig hebt zijn vier lenzen\u00a0met, twee aan twee, verschillende brandpuntsafstanden.<\/p>\n<p><em>Bron: <a href=\"http:\/\/www.demorgen.be\/dm\/nl\/992\/Wetenschap\/article\/detail\/2071015\/2014\/09\/30\/Deze-ontdekking-brengt-de-onzichtbaarheidsmantel-een-stap-dichterbij.dhtml\">De Morgen<\/a><\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Het is een truc met vier lenzen en dan lijkt het alsof je dwars door, bijvoorbeeld, je hand de achtergrond kunt zien en nog wel vanuit elke hoek. Je moet dan wel door die lenzen blijven kijken. Die breken het &hellip; <a href=\"https:\/\/www.arnoschrauwers.nl\/weblog\/30\/09\/2014\/een-gat-in-de-hand\/\">Lees verder <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[86],"tags":[2298,2297],"class_list":["post-3719","post","type-post","status-publish","format-standard","hentry","category-natuurkunde","tag-lenzen","tag-onzichtbaarheid"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Een gat in de hand - Geleerd uitschot<\/title>\n<meta name=\"description\" content=\"Met vier lenzen kun je een gat in de hand maken.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.arnoschrauwers.nl\/weblog\/30\/09\/2014\/een-gat-in-de-hand\/\" \/>\n<meta property=\"og:locale\" content=\"nl_NL\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Een gat in de hand - 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