{"product_id":"penrose-triangle-poster-impossible-tribar-optical-illusion-print","title":"Penrose Triangle Poster - Impossible Tribar Optical Illusion Print","description":"\u003ch2\u003ePenrose Triangle Poster\u003c\/h2\u003e\n\u003cp\u003eThe famous impossible triangle, built from flat blocks of mustard, terracotta and blush on deep navy. Three bars meet at three right angles, and the longer you look, the less sense it makes.\u003c\/p\u003e\n\u003cp\u003ePart of our Impossible Objects set in the Poster Kingz Puzzle \u0026amp; Science range. The fact behind the art: The impossible triangle was first drawn by Swedish artist Oscar Reutersvard in 1934 and was popularised by Lionel and Roger Penrose in their 1958 paper on impossible objects. Every design is drawn in code from the real data, so the details are right, then printed in our modern palette of cream, navy, terracotta, mustard and teal.\u003c\/p\u003e\n\u003ch3\u003eProduct details\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eExclusive Poster Kingz design\u003c\/li\u003e\n  \u003cli\u003eAvailable in A5, A4, A3 and A2 unframed sizes\u003c\/li\u003e\n  \u003cli\u003eAlso available framed in A5, A4 and A3, ready to hang straight out of the box\u003c\/li\u003e\n  \u003cli\u003ePrinted on premium quality paper stock\u003c\/li\u003e\n  \u003cli\u003eDesigned and printed in the UK by Poster Kingz\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSee the rest of the set in our \u003ca href=\"\/collections\/puzzle-posters\"\u003ePuzzle Posters\u003c\/a\u003e collection, or browse the whole \u003ca href=\"\/collections\/puzzle-science-posters\"\u003ePuzzle \u0026amp; Science Posters\u003c\/a\u003e range.\u003c\/p\u003e","brand":"Poster Kingz","offers":[{"title":"A5 (unframed) 5.8 × 8.3 in","offer_id":58255583543678,"sku":null,"price":7.99,"currency_code":"GBP","in_stock":true},{"title":"A4 (unframed) 8.3 × 11.7 in","offer_id":58255583576446,"sku":null,"price":9.99,"currency_code":"GBP","in_stock":true},{"title":"A3 (unframed) 11.7 × 16.5 in","offer_id":58255583609214,"sku":null,"price":14.99,"currency_code":"GBP","in_stock":true},{"title":"A2 (unframed) 16.5 × 23.4 in","offer_id":58255583641982,"sku":null,"price":22.99,"currency_code":"GBP","in_stock":true},{"title":"A5 Framed","offer_id":58255583674750,"sku":null,"price":19.99,"currency_code":"GBP","in_stock":true},{"title":"A4 Framed","offer_id":58255583707518,"sku":null,"price":24.99,"currency_code":"GBP","in_stock":true},{"title":"A3 Framed","offer_id":58255583740286,"sku":null,"price":29.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0695\/8989\/3410\/files\/penrose-triangle-poster-impossible-tribar-optical-illusion-print-1.jpg?v=1792269355","url":"https:\/\/posterkingzuk.com\/products\/penrose-triangle-poster-impossible-tribar-optical-illusion-print","provider":"Poster Kingz","version":"1.0","type":"link"}