{"id":6614,"date":"2022-12-09T16:49:17","date_gmt":"2022-12-09T16:49:17","guid":{"rendered":"https:\/\/demos.swarthmore.edu\/physics\/?p=6614"},"modified":"2024-01-22T14:15:59","modified_gmt":"2024-01-22T14:15:59","slug":"infrared-activity-of-co2","status":"publish","type":"post","link":"https:\/\/demos.swarthmore.edu\/physics\/2022\/12\/infrared-activity-of-co2\/","title":{"rendered":"Infrared Activity of CO2"},"content":{"rendered":"\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"240\" height=\"320\" src=\"https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2022\/12\/IMG_2606-rotated.jpg\" alt=\"Image shows tin containers for this demo in their location.\" class=\"wp-image-6615\" srcset=\"https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2022\/12\/IMG_2606-rotated.jpg 240w, https:\/\/demos.swarthmore.edu\/physics\/wp-content\/uploads\/sites\/2\/2022\/12\/IMG_2606-225x300.jpg 225w\" sizes=\"(max-width: 240px) 100vw, 240px\" \/><\/figure><\/div>\n\n\n\n<ul><li>Demonstrate the greenhouse effect, as outlined here: <a href=\"https:\/\/aapt.scitation.org\/doi\/10.1119\/1.5095383\">https:\/\/aapt.scitation.org\/doi\/10.1119\/1.5095383<\/a> <\/li><li>Set everything up as shown in the link above; use a white trifold background. Be careful of reflections off of the plastic wrap in the direction of the camera.<\/li><li>Empty at least half of a CO2 canister into one of the tins and close quickly with plastic wrap and rubber bands.<\/li><li>Heat for approximately 4 minutes; may want to wait before doing this to allow the CO2 canister to come to room temperature (will be cold after filling).<\/li><li>Remove heat lamps and watch the results through the IR camera &#8211; should see that the CO2 canister cools at a slower rate. <\/li><li>Located in L01, section B-6<\/li><li>Full setup material list:<ul><li>2 lab jacks<\/li><li>2 tin canisters (peanut containers)<\/li><li>4 rubber bands (two per container)<\/li><li>Plastic wrap<\/li><li>IR camera on tripod<\/li><li>Extension cords<\/li><li>White trifold<\/li><li>2 ring stands<\/li><li>2 light bulbs (suggest 125 W)<\/li><li>CO2 canister for bike tire inflation<\/li><\/ul><\/li><\/ul>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Demonstrate the greenhouse effect, as outlined here: https:\/\/aapt.scitation.org\/doi\/10.1119\/1.5095383 Set everything up as shown in the link above; use a white trifold background. Be careful of reflections off of the plastic wrap in the direction of the camera. Empty at least half of a CO2 canister into one of the tins and close quickly with plastic &hellip; <a href=\"https:\/\/demos.swarthmore.edu\/physics\/2022\/12\/infrared-activity-of-co2\/\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Infrared Activity of CO2<\/span><\/a><\/p>\n","protected":false},"author":18,"featured_media":6615,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2,12,1],"tags":[760,761,759],"_links":{"self":[{"href":"https:\/\/demos.swarthmore.edu\/physics\/wp-json\/wp\/v2\/posts\/6614"}],"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\/18"}],"replies":[{"embeddable":true,"href":"https:\/\/demos.swarthmore.edu\/physics\/wp-json\/wp\/v2\/comments?post=6614"}],"version-history":[{"count":1,"href":"https:\/\/demos.swarthmore.edu\/physics\/wp-json\/wp\/v2\/posts\/6614\/revisions"}],"predecessor-version":[{"id":6616,"href":"https:\/\/demos.swarthmore.edu\/physics\/wp-json\/wp\/v2\/posts\/6614\/revisions\/6616"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/demos.swarthmore.edu\/physics\/wp-json\/wp\/v2\/media\/6615"}],"wp:attachment":[{"href":"https:\/\/demos.swarthmore.edu\/physics\/wp-json\/wp\/v2\/media?parent=6614"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/demos.swarthmore.edu\/physics\/wp-json\/wp\/v2\/categories?post=6614"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/demos.swarthmore.edu\/physics\/wp-json\/wp\/v2\/tags?post=6614"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}