{"id":6956,"date":"2021-10-26T17:30:47","date_gmt":"2021-10-26T15:30:47","guid":{"rendered":"http:\/\/www.fosforoscienza.it\/?page_id=6956"},"modified":"2021-10-27T12:03:28","modified_gmt":"2021-10-27T10:03:28","slug":"la-scala-infinita-o-scala-di-giacobbe","status":"publish","type":"page","link":"https:\/\/www.fosforoscienza.it\/index.php\/la-scala-infinita-o-scala-di-giacobbe\/","title":{"rendered":"La scala infinita o scala di Giacobbe"},"content":{"rendered":"<div class=\"wpb-content-wrapper\"><p>[vc_row type=&#8221;vc_default&#8221; css=&#8221;.vc_custom_1476008791393{padding-top: 70px !important;padding-bottom: 25px !important;}&#8221;][vc_column width=&#8221;1\/3&#8243;]<style type=\"text\/css\" data-type=\"the7_shortcodes-inline-css\">.shortcode-single-image-wrap.shortcode-single-image-c47fb70eee8430382442957188515eb4.enable-bg-rollover .rollover i,\n.shortcode-single-image-wrap.shortcode-single-image-c47fb70eee8430382442957188515eb4.enable-bg-rollover .rollover-video i {\n  background: ;\n  background: -webkit-linear-gradient();\n  background: linear-gradient();\n}\n.shortcode-single-image-wrap.shortcode-single-image-c47fb70eee8430382442957188515eb4 .rollover-icon {\n  font-size: 32px;\n  color: #ffffff;\n  min-width: 44px;\n  min-height: 44px;\n  line-height: 44px;\n  border-radius: 100px;\n  border-style: solid;\n  border-width: 0px;\n}\n.dt-icon-bg-on.shortcode-single-image-wrap.shortcode-single-image-c47fb70eee8430382442957188515eb4 .rollover-icon {\n  background: rgba(255,255,255,0.3);\n  box-shadow: none;\n}\n<\/style><div class=\"shortcode-single-image-wrap shortcode-single-image-c47fb70eee8430382442957188515eb4 alignnone fadeIn animate-element  enable-bg-rollover dt-icon-bg-off\" style=\"margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; width:300px;\"><div class=\"shortcode-single-image\"><div class=\"fancy-media-wrap  layzr-bg\" style=\"\"><img fetchpriority=\"high\" decoding=\"async\" class=\"preload-me lazy-load aspect\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D&#39;http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg&#39;%20viewBox%3D&#39;0%200%20300%20300&#39;%2F%3E\" data-src=\"https:\/\/www.fosforoscienza.it\/wp-content\/uploads\/2021\/10\/Colorful-giocattoli-di-Legno-scala-di-giacobbe-Classico-Giocattolo-per-Bambini-Giocattoli-Della-Novit-Regali-Per-300x300.jpg\" data-srcset=\"https:\/\/www.fosforoscienza.it\/wp-content\/uploads\/2021\/10\/Colorful-giocattoli-di-Legno-scala-di-giacobbe-Classico-Giocattolo-per-Bambini-Giocattoli-Della-Novit-Regali-Per-300x300.jpg 300w, https:\/\/www.fosforoscienza.it\/wp-content\/uploads\/2021\/10\/Colorful-giocattoli-di-Legno-scala-di-giacobbe-Classico-Giocattolo-per-Bambini-Giocattoli-Della-Novit-Regali-Per-600x600.jpg 600w\" loading=\"eager\" sizes=\"(max-width: 300px) 100vw, 300px\" width=\"300\" height=\"300\"  data-dt-location=\"https:\/\/www.fosforoscienza.it\/index.php\/cosa-facciamo\/progetti\/factory-lab\/colorful-giocattoli-di-legno-scala-di-giacobbe-classico-giocattolo-per-bambini-giocattoli-della-novit-regali-per\/\" style=\"--ratio: 300 \/ 300;\" alt=\"\" \/><\/div><\/div><\/div>[\/vc_column][vc_column width=&#8221;1\/3&#8243;]<div id=\"ultimate-heading-41169f5ddca3fc52\" class=\"uvc-heading ult-adjust-bottom-margin ultimate-heading-41169f5ddca3fc52 uvc-6247 accent-border-color\" data-hspacer=\"line_only\"  data-halign=\"left\" style=\"text-align:left\"><div class=\"uvc-main-heading ult-responsive\"  data-ultimate-target='.uvc-heading.ultimate-heading-41169f5ddca3fc52 h2'  data-responsive-json-new='{\"font-size\":\"desktop:26px;\",\"line-height\":\"desktop:40px;\"}' ><h2 style=\"font-weight:bold;margin-bottom:20px;\">Come si gioca<\/h2><\/div><div class=\"uvc-heading-spacer line_only\" style=\"topheight:5px;\"><span class=\"uvc-headings-line\" style=\"border-style:solid;border-bottom-width:5px;border-color:;width:200px;\"><\/span><\/div><\/div>[vc_column_text css=&#8221;.vc_custom_1635262191046{padding-top: 30px !important;}&#8221;]La <strong>scala<\/strong> di <strong>Giacobbe<\/strong> \u00e8 un <strong>giocattolo<\/strong> popolare costituito da blocchi di legno tenuti insieme da <strong>corde<\/strong> o <strong>nastri<\/strong>. Quando la scala viene trattenuta a un&#8217;estremit\u00e0, i blocchi sembrano cadere a cascata lungo le corde. Questo effetto \u00e8 <strong>un&#8217;illusione<\/strong> <strong>visiva<\/strong> che \u00e8 il risultato di un blocco dopo l&#8217;altro che si capovolge.<\/p>\n<p>Pu\u00f2 essere considerata <strong>un&#8217;illusione<\/strong> <strong>cinetica<\/strong>, in cui i blocchi sembrano cambiare posizione quando non lo fanno. Il suo nome Scala di Giacobbe deriva dalla scala biblica per il paradiso, menzionata nella <strong>Genesi<\/strong>[\/vc_column_text][\/vc_column][vc_column width=&#8221;1\/3&#8243;]<div id=\"ultimate-heading-971969f5ddca3fcd5\" class=\"uvc-heading ult-adjust-bottom-margin ultimate-heading-971969f5ddca3fcd5 uvc-5492 accent-border-color\" data-hspacer=\"line_only\"  data-halign=\"left\" style=\"text-align:left\"><div class=\"uvc-main-heading ult-responsive\"  data-ultimate-target='.uvc-heading.ultimate-heading-971969f5ddca3fcd5 h2'  data-responsive-json-new='{\"font-size\":\"desktop:26px;\",\"line-height\":\"desktop:40px;\"}' ><h2 style=\"font-weight:bold;margin-bottom:20px;\">How to play<\/h2><\/div><div class=\"uvc-heading-spacer line_only\" style=\"topheight:5px;\"><span class=\"uvc-headings-line\" style=\"border-style:solid;border-bottom-width:5px;border-color:;width:200px;\"><\/span><\/div><\/div>[vc_column_text css=&#8221;.vc_custom_1635262230669{padding-top: 30px !important;}&#8221;]A <b>Jacob&#8217;s ladder<\/b>\u00a0is a folk <b>toy<\/b> consisting of blocks of wood held together by <b>strings<\/b> or <b>ribbons<\/b>. When the ladder is held at one end, blocks appear to cascade down the strings.<\/p>\n<p>This effect is a <b>visual<\/b> <b>illusion<\/b> which is the result of one block after another <b>flipping<\/b> <b>over<\/b>. It may be considered a <b>kineticillusion<\/b>, where the blocks appear to change <b>position<\/b> when they do not. Its name <i>Jacob&#8217;s Ladder<\/i> comes from the biblical ladder to heaven, mentioned in <b>Genesis<\/b>[\/vc_column_text][\/vc_column][\/vc_row][vc_row css=&#8221;.vc_custom_1594638257488{padding-top: 70px !important;}&#8221;][vc_column width=&#8221;1\/3&#8243;]<div id=\"ultimate-heading-143169f5ddca3fd38\" class=\"uvc-heading ult-adjust-bottom-margin ultimate-heading-143169f5ddca3fd38 uvc-2653 accent-border-color\" data-hspacer=\"line_only\"  data-halign=\"left\" style=\"text-align:left\"><div class=\"uvc-main-heading ult-responsive\"  data-ultimate-target='.uvc-heading.ultimate-heading-143169f5ddca3fd38 h2'  data-responsive-json-new='{\"font-size\":\"desktop:40px;\",\"line-height\":\"desktop:46px;\"}' ><h2 style=\"font-weight:bold;margin-bottom:15px;\">La storia<\/h2><\/div><div class=\"uvc-heading-spacer line_only\" style=\"topheight:5px;\"><span class=\"uvc-headings-line\" style=\"border-style:solid;border-bottom-width:5px;border-color:;width:200px;\"><\/span><\/div><\/div>[vc_video link=&#8221;https:\/\/youtu.be\/tQskkD5wgVA&#8221;][\/vc_column][vc_column width=&#8221;1\/3&#8243;]<div id=\"ultimate-heading-805269f5ddca3fda5\" class=\"uvc-heading ult-adjust-bottom-margin ultimate-heading-805269f5ddca3fda5 uvc-3035 accent-border-color\" data-hspacer=\"line_only\"  data-halign=\"left\" style=\"text-align:left\"><div class=\"uvc-main-heading ult-responsive\"  data-ultimate-target='.uvc-heading.ultimate-heading-805269f5ddca3fda5 h2'  data-responsive-json-new='{\"font-size\":\"desktop:40px;\",\"line-height\":\"desktop:46px;\"}' ><h2 style=\"font-weight:bold;margin-bottom:15px;\">Come Funziona<\/h2><\/div><div class=\"uvc-heading-spacer line_only\" style=\"topheight:5px;\"><span class=\"uvc-headings-line\" style=\"border-style:solid;border-bottom-width:5px;border-color:;width:200px;\"><\/span><\/div><\/div>[vc_video link=&#8221;https:\/\/youtu.be\/3CJ4it5iny8&#8243;][\/vc_column][vc_column width=&#8221;1\/3&#8243;]<style type=\"text\/css\" data-type=\"the7_shortcodes-inline-css\">.shortcode-single-image-wrap.shortcode-single-image-f373524e63c89518092bbc3b40dd2d90.enable-bg-rollover .rollover i,\n.shortcode-single-image-wrap.shortcode-single-image-f373524e63c89518092bbc3b40dd2d90.enable-bg-rollover .rollover-video i {\n  background: ;\n  background: -webkit-linear-gradient();\n  background: linear-gradient();\n}\n.shortcode-single-image-wrap.shortcode-single-image-f373524e63c89518092bbc3b40dd2d90 .rollover-icon {\n  font-size: 32px;\n  color: #ffffff;\n  min-width: 44px;\n  min-height: 44px;\n  line-height: 44px;\n  border-radius: 100px;\n  border-style: solid;\n  border-width: 0px;\n}\n.dt-icon-bg-on.shortcode-single-image-wrap.shortcode-single-image-f373524e63c89518092bbc3b40dd2d90 .rollover-icon {\n  background: rgba(255,255,255,0.3);\n  box-shadow: none;\n}\n<\/style><div class=\"shortcode-single-image-wrap shortcode-single-image-f373524e63c89518092bbc3b40dd2d90 alignnone  enable-bg-rollover dt-icon-bg-off\" style=\"margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; width:200px;\"><div class=\"shortcode-single-image\"><div class=\"fancy-media-wrap  layzr-bg\" style=\"\"><img decoding=\"async\" class=\"preload-me lazy-load aspect\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D&#39;http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg&#39;%20viewBox%3D&#39;0%200%20200%20329&#39;%2F%3E\" data-src=\"https:\/\/www.fosforoscienza.it\/wp-content\/uploads\/2021\/10\/Jacobs_Ladder_2-200x329.jpg\" data-srcset=\"https:\/\/www.fosforoscienza.it\/wp-content\/uploads\/2021\/10\/Jacobs_Ladder_2-200x329.jpg 200w, https:\/\/www.fosforoscienza.it\/wp-content\/uploads\/2021\/10\/Jacobs_Ladder_2-400x658.jpg 400w\" loading=\"eager\" sizes=\"(max-width: 200px) 100vw, 200px\" width=\"200\" height=\"329\"  data-dt-location=\"https:\/\/www.fosforoscienza.it\/index.php\/la-scala-infinita-o-scala-di-giacobbe\/jacobs_ladder_2\/\" style=\"--ratio: 200 \/ 329;\" alt=\"\" \/><\/div><\/div><\/div>[\/vc_column][\/vc_row][vc_row][vc_column width=&#8221;1\/2&#8243;]<div id=\"ultimate-heading-697269f5ddca40d69\" class=\"uvc-heading ult-adjust-bottom-margin ultimate-heading-697269f5ddca40d69 uvc-7360 accent-border-color\" data-hspacer=\"line_only\"  data-halign=\"left\" style=\"text-align:left\"><div class=\"uvc-main-heading ult-responsive\"  data-ultimate-target='.uvc-heading.ultimate-heading-697269f5ddca40d69 h2'  data-responsive-json-new='{\"font-size\":\"desktop:40px;\",\"line-height\":\"desktop:46px;\"}' ><h2 style=\"font-weight:bold;margin-bottom:15px;\">Lo sapevi?<\/h2><\/div><div class=\"uvc-heading-spacer line_only\" style=\"topheight:5px;\"><span class=\"uvc-headings-line\" style=\"border-style:solid;border-bottom-width:5px;border-color:;width:200px;\"><\/span><\/div><\/div>[vc_column_text css=&#8221;.vc_custom_1635264226814{padding-top: 30px !important;padding-bottom: 30px !important;}&#8221;]?La disposizione di nastri intrecciati consente a ciascun blocco di agire come se fosse <strong>incernierato<\/strong> al successivo in corrispondenza di una delle sue due estremit\u00e0. Lo <strong>stesso<\/strong> <strong>meccanismo<\/strong> \u00e8 utilizzato nel <strong>Cubo di Rubik<\/strong> ma con filamenti di plastica che corrono diagonalmente attraverso i quadrati, con il risultato che i quadrati possono incernierarsi lungo uno dei due lati adiacenti.[\/vc_column_text][\/vc_column][vc_column width=&#8221;1\/2&#8243;]<div id=\"ultimate-heading-875269f5ddca40dd9\" class=\"uvc-heading ult-adjust-bottom-margin ultimate-heading-875269f5ddca40dd9 uvc-2838 accent-border-color\" data-hspacer=\"line_only\"  data-halign=\"left\" style=\"text-align:left\"><div class=\"uvc-main-heading ult-responsive\"  data-ultimate-target='.uvc-heading.ultimate-heading-875269f5ddca40dd9 h2'  data-responsive-json-new='{\"font-size\":\"desktop:40px;\",\"line-height\":\"desktop:46px;\"}' ><h2 style=\"font-weight:bold;margin-bottom:15px;\">Did you know?<\/h2><\/div><div class=\"uvc-heading-spacer line_only\" style=\"topheight:5px;\"><span class=\"uvc-headings-line\" style=\"border-style:solid;border-bottom-width:5px;border-color:;width:200px;\"><\/span><\/div><\/div>[vc_column_text css=&#8221;.vc_custom_1635264237806{padding-top: 30px !important;padding-bottom: 30px !important;}&#8221;]?An arrangement of <strong>interlaced<\/strong> <strong>ribbons<\/strong> allows each block to act as if hinged to the next one at either of its two ends. The same mechanism is used in the 1980s toy <strong>Rubik&#8217;s Magic<\/strong>, but with plastic filaments run diagonally across squares, with the result that the squares can hinge along either of two adjacent sides.[\/vc_column_text][\/vc_column][\/vc_row][vc_row css=&#8221;.vc_custom_1635329007101{padding-top: 85px !important;}&#8221;][vc_column][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>[vc_row type=&#8221;vc_default&#8221; css=&#8221;.vc_custom_1476008791393{padding-top: 70px !important;padding-bottom: 25px !important;}&#8221;][vc_column width=&#8221;1\/3&#8243;][\/vc_column][vc_column width=&#8221;1\/3&#8243;][vc_column_text css=&#8221;.vc_custom_1635262191046{padding-top: 30px !important;}&#8221;]La scala di Giacobbe \u00e8 un giocattolo popolare costituito da blocchi di legno tenuti insieme da corde o nastri. Quando la scala viene trattenuta a un&#8217;estremit\u00e0, i blocchi sembrano cadere a cascata lungo le corde. Questo effetto \u00e8 un&#8217;illusione visiva che \u00e8 il risultato&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-6956","page","type-page","status-publish","hentry","description-off"],"_links":{"self":[{"href":"https:\/\/www.fosforoscienza.it\/index.php\/wp-json\/wp\/v2\/pages\/6956","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.fosforoscienza.it\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.fosforoscienza.it\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.fosforoscienza.it\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fosforoscienza.it\/index.php\/wp-json\/wp\/v2\/comments?post=6956"}],"version-history":[{"count":11,"href":"https:\/\/www.fosforoscienza.it\/index.php\/wp-json\/wp\/v2\/pages\/6956\/revisions"}],"predecessor-version":[{"id":6984,"href":"https:\/\/www.fosforoscienza.it\/index.php\/wp-json\/wp\/v2\/pages\/6956\/revisions\/6984"}],"wp:attachment":[{"href":"https:\/\/www.fosforoscienza.it\/index.php\/wp-json\/wp\/v2\/media?parent=6956"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}