{"id":349,"date":"2012-12-23T05:48:49","date_gmt":"2012-12-23T05:48:49","guid":{"rendered":"http:\/\/dorjegurung.com\/sciblog\/?page_id=349"},"modified":"2026-03-12T18:31:46","modified_gmt":"2026-03-12T18:31:46","slug":"puzzler-4-winter-puzzler","status":"publish","type":"page","link":"https:\/\/www.dorjegurung.com\/sciblog\/myp2-3-science\/term-2-puzzlers\/puzzler-4-winter-puzzler\/","title":{"rendered":"Puzzlers #4. Winter Puzzler"},"content":{"rendered":"\n<p>Even though it is difficult to imagine when temperatures are so high here,&nbsp;there are places in the world that are experiencing winter.&nbsp; Take&nbsp;for example&nbsp;Fairbanks, Alaska where a&nbsp;month long,&nbsp; \u201340 C cold snap is not uncommon for January.&nbsp; At \u201340 C (the temperature by the way, where the Celsius and Fahrenheit scales meet) the contents of a cup of hot coffee when tossed into the air crystallizes before hitting the ground.&nbsp; The same is not true for a cup of cold coffee.&nbsp; How can that be?&nbsp; Do your best to explain your answer.<\/p>\n\n\n\n<p>Concepts involved:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>heat transfer, (rate of) cooling, temperature difference (advanced concept: Newton&#8217;s law of cooling)<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Even though it is difficult to imagine when temperatures are so high here,&nbsp;there are places in the world that are experiencing winter.&nbsp; Take&nbsp;for example&nbsp;Fairbanks, Alaska where a&nbsp;month long,&nbsp; \u201340 C cold snap is not uncommon for January.&nbsp; At \u201340 C (the temperature by the way, where the Celsius and Fahrenheit scales meet) the contents of [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":2540,"parent":891,"menu_order":1,"comment_status":"open","ping_status":"closed","template":"","meta":{"jetpack_post_was_ever_published":false,"footnotes":""},"class_list":["post-349","page","type-page","status-publish","has-post-thumbnail","hentry"],"blocksy_meta":[],"jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/P2Y7Kk-5D","_links":{"self":[{"href":"https:\/\/www.dorjegurung.com\/sciblog\/wp-json\/wp\/v2\/pages\/349","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.dorjegurung.com\/sciblog\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.dorjegurung.com\/sciblog\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.dorjegurung.com\/sciblog\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.dorjegurung.com\/sciblog\/wp-json\/wp\/v2\/comments?post=349"}],"version-history":[{"count":1,"href":"https:\/\/www.dorjegurung.com\/sciblog\/wp-json\/wp\/v2\/pages\/349\/revisions"}],"predecessor-version":[{"id":4201,"href":"https:\/\/www.dorjegurung.com\/sciblog\/wp-json\/wp\/v2\/pages\/349\/revisions\/4201"}],"up":[{"embeddable":true,"href":"https:\/\/www.dorjegurung.com\/sciblog\/wp-json\/wp\/v2\/pages\/891"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.dorjegurung.com\/sciblog\/wp-json\/wp\/v2\/media\/2540"}],"wp:attachment":[{"href":"https:\/\/www.dorjegurung.com\/sciblog\/wp-json\/wp\/v2\/media?parent=349"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}