{"id":5857,"date":"2017-03-29T20:01:42","date_gmt":"2017-03-29T20:01:42","guid":{"rendered":"http:\/\/demos.swarthmore.edu\/physics\/?p=5857"},"modified":"2024-01-19T19:10:41","modified_gmt":"2024-01-19T19:10:41","slug":"friction-pen","status":"publish","type":"post","link":"https:\/\/demos.swarthmore.edu\/physics\/2017\/03\/friction-pen\/","title":{"rendered":"Friction Pen"},"content":{"rendered":"<p style=\"text-align: center;\"><a href=\"http:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/03\/friction-pen.jpg\" rel=\"attachment wp-att-5858\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-5858\" src=\"http:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/03\/friction-pen-169x300.jpg\" alt=\"friction pen\" width=\"259\" height=\"459\" srcset=\"https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/03\/friction-pen-169x300.jpg 169w, https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/03\/friction-pen-576x1024.jpg 576w, https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/03\/friction-pen-351x624.jpg 351w, https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/03\/friction-pen.jpg 702w\" sizes=\"(max-width: 259px) 100vw, 259px\" \/><\/a><\/p>\n<p>Heat of friction causes ink in &#8220;Frixion&#8221; erasable pens to disappear.<\/p>\n<p>Ink reappears when exposed to cold temperatures.<\/p>\n<p>Use lighter for high temp. (Be careful not to burn paper. Just wave flame in front of paper until ink disappears)<\/p>\n<p>Use liquid from compressed air to achieve cold temperatures. (Invert can and spray. Be careful not to get liquid on skin. Extremely cold.)<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: center;\"><a href=\"http:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/03\/friction-pen2.jpg\" rel=\"attachment wp-att-5859\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-5859 aligncenter\" src=\"http:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/03\/friction-pen2-169x300.jpg\" alt=\"friction pen2\" width=\"261\" height=\"463\" srcset=\"https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/03\/friction-pen2-169x300.jpg 169w, https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/03\/friction-pen2-576x1024.jpg 576w, https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/03\/friction-pen2-351x624.jpg 351w, https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/03\/friction-pen2.jpg 702w\" sizes=\"(max-width: 261px) 100vw, 261px\" \/><\/a><br \/>\n<a href=\"http:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/03\/friction-pen-3.jpg\" rel=\"attachment wp-att-5863\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-5863 aligncenter\" src=\"http:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/03\/friction-pen-3-169x300.jpg\" alt=\"friction pen 3\" width=\"259\" height=\"460\" srcset=\"https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/03\/friction-pen-3-169x300.jpg 169w, https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/03\/friction-pen-3-576x1024.jpg 576w, https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/03\/friction-pen-3-351x624.jpg 351w, https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/03\/friction-pen-3.jpg 702w\" sizes=\"(max-width: 259px) 100vw, 259px\" \/><\/a><a href=\"http:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/03\/friction-pen-6.jpg\" rel=\"attachment wp-att-5860\"><br \/>\n<\/a><a href=\"http:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/03\/friction-pen-5.jpg\" rel=\"attachment wp-att-5861\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-5861 aligncenter\" src=\"http:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/03\/friction-pen-5-300x169.jpg\" alt=\"friction pen 5\" width=\"460\" height=\"259\" srcset=\"https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/03\/friction-pen-5-300x169.jpg 300w, https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/03\/friction-pen-5-768x432.jpg 768w, https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/03\/friction-pen-5-1024x576.jpg 1024w, https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/03\/friction-pen-5-772x434.jpg 772w, https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/03\/friction-pen-5-624x351.jpg 624w, https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/03\/friction-pen-5.jpg 1248w\" sizes=\"(max-width: 460px) 100vw, 460px\" \/><\/a><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-5860 aligncenter\" src=\"http:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/03\/friction-pen-6-300x169.jpg\" alt=\"friction pen 6\" width=\"460\" height=\"259\" srcset=\"https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/03\/friction-pen-6-300x169.jpg 300w, https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/03\/friction-pen-6-768x432.jpg 768w, https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/03\/friction-pen-6-1024x576.jpg 1024w, https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/03\/friction-pen-6-772x434.jpg 772w, https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/03\/friction-pen-6-624x351.jpg 624w, https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2017\/03\/friction-pen-6.jpg 1248w\" sizes=\"(max-width: 460px) 100vw, 460px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Heat of friction causes ink in &#8220;Frixion&#8221; erasable pens to disappear. Ink reappears when exposed to cold temperatures. Use lighter for high temp. (Be careful not to burn paper. Just wave flame in front of paper until ink disappears) Use liquid from compressed air to achieve cold temperatures. (Invert can and spray. Be careful not &hellip; <a href=\"https:\/\/demos.swarthmore.edu\/physics\/2017\/03\/friction-pen\/\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Friction Pen<\/span><\/a><\/p>\n","protected":false},"author":4,"featured_media":5858,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[75,12],"tags":[618,247,619],"_links":{"self":[{"href":"https:\/\/demos.swarthmore.edu\/physics\/wp-json\/wp\/v2\/posts\/5857"}],"collection":[{"href":"https:\/\/demos.swarthmore.edu\/physics\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/demos.swarthmore.edu\/physics\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/demos.swarthmore.edu\/physics\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/demos.swarthmore.edu\/physics\/wp-json\/wp\/v2\/comments?post=5857"}],"version-history":[{"count":9,"href":"https:\/\/demos.swarthmore.edu\/physics\/wp-json\/wp\/v2\/posts\/5857\/revisions"}],"predecessor-version":[{"id":5872,"href":"https:\/\/demos.swarthmore.edu\/physics\/wp-json\/wp\/v2\/posts\/5857\/revisions\/5872"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/demos.swarthmore.edu\/physics\/wp-json\/wp\/v2\/media\/5858"}],"wp:attachment":[{"href":"https:\/\/demos.swarthmore.edu\/physics\/wp-json\/wp\/v2\/media?parent=5857"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/demos.swarthmore.edu\/physics\/wp-json\/wp\/v2\/categories?post=5857"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/demos.swarthmore.edu\/physics\/wp-json\/wp\/v2\/tags?post=5857"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}