{"id":234,"date":"2009-08-24T22:57:46","date_gmt":"2009-08-24T21:57:46","guid":{"rendered":"http:\/\/helpmyphysics.co.uk\/wordpress\/?p=234"},"modified":"2009-08-24T22:57:46","modified_gmt":"2009-08-24T21:57:46","slug":"heat-topic-the-vacuum-flask","status":"publish","type":"post","link":"https:\/\/helpmyphysics.co.uk\/wordpress\/?p=234","title":{"rendered":"Heat Topic: The Vacuum Flask."},"content":{"rendered":"<p><a href=\"http:\/\/inventors.about.com\/library\/inventors\/blthermos.htm\"><img loading=\"lazy\" decoding=\"async\" width=\"388\" height=\"314\" src=\"https:\/\/helpmyphysics.co.uk\/wordpress\/wp-content\/uploads\/2009\/08\/james_dewar.jpg\" alt=\"James Dewar\" title=\"james_dewar\" class=\"aligncenter size-full wp-image-235\" srcset=\"https:\/\/helpmyphysics.co.uk\/wordpress\/wp-content\/uploads\/2009\/08\/james_dewar.jpg 388w, https:\/\/helpmyphysics.co.uk\/wordpress\/wp-content\/uploads\/2009\/08\/james_dewar-300x242.jpg 300w\" sizes=\"auto, (max-width: 388px) 100vw, 388px\" \/><\/a><\/p>\n<p>James Dewar was a Scottish scientist born in 1842. He built a machine to change oxygen gas into liquid oxygen.<br \/>\nAs result of this work he invented a special flask to keep liquids cool.<br \/>\nThis was the Dewar flask.<br \/>\nYou can read about the Dewar Flask <a href=\"http:\/\/inventors.about.com\/gi\/dynamic\/offsite.htm?site=http:\/\/www.madsci.org\/posts\/archives\/mar97\/853714178.Ph.r.html\">here<\/a><br \/>\nFind out about James Dewar <a href=\"http:\/\/inventors.about.com\/library\/inventors\/blthermos.htm\">here<\/a><\/p>\n<p>Some questions:<\/p>\n<ol>\n<li>Describe a part of the flask that stops heat loss through conduction.<\/li>\n<li>Why is the inside of the flask made of a silver type of material?<\/li>\n","protected":false},"excerpt":{"rendered":"<p>James Dewar was a Scottish scientist born in 1842. He built a machine to change oxygen gas into liquid oxygen. As result of this work he invented a special flask to keep liquids cool. This was the Dewar flask. You can read about the Dewar Flask here Find out about James Dewar here Some questions: [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-234","post","type-post","status-publish","format-standard","hentry","category-science-classes"],"_links":{"self":[{"href":"https:\/\/helpmyphysics.co.uk\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/234","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/helpmyphysics.co.uk\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/helpmyphysics.co.uk\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/helpmyphysics.co.uk\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/helpmyphysics.co.uk\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=234"}],"version-history":[{"count":1,"href":"https:\/\/helpmyphysics.co.uk\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/234\/revisions"}],"predecessor-version":[{"id":236,"href":"https:\/\/helpmyphysics.co.uk\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/234\/revisions\/236"}],"wp:attachment":[{"href":"https:\/\/helpmyphysics.co.uk\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=234"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/helpmyphysics.co.uk\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=234"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/helpmyphysics.co.uk\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=234"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}