How do thermoses keep coffee hot?

<p><strong>#033 Rebroadcast</strong> </p><p><br>That's right, we are <em>sort of </em>talking about coffee this week. Or rather, how to keep it hot. Nowadays we all have some version of a thermos for our coffee, tea, water, or what-have-you. Today Melissa and Jam try to get to the <em>bottom</em> of how those work. How do they keep things hot and cold? What's between the two layers (or whatever) and how is it so good at insulating? Is it a vacuum? Can someone please tell me what the heck is going on?</p><p><br><strong>References from this episode</strong></p><ol> <li>Chemistry, Edition 2 - Flowers, Theopold, Langley, Robinson</li> <li>Physical Chemistry, Edition 3 - Thomas Engel<a href="https://www.google.com/url?sa=t&amp;rct=j&amp;q=&amp;esrc=s&amp;source=web&amp;cd=1&amp;cad=rja&amp;uact=8&amp;ved=2ahUKEwjAw8zGsdLnAhUDc60KHapmC54QFjAAegQIBRAB&amp;url=https%3A%2F%2Fwww.acs.org%2Fcontent%2Fdam%2Facsorg%2Feducation%2Fresources%2Fk-8%2Fscience-activities%2Fchemicalphysicalchange%2Fchemicalreactions%2Fheat-up-to-some-cool-reactions.pdf&amp;usg=AOvVaw3x_f3MRxNND6viel74gOsb"> </a> </li> </ol><p><br>Check out our website at <a href="http://chemforyourlife.com/">chemforyourlife.com</a><br>Find us on <a href="http://instagram.com/chemforyourlife">Instagram</a>, <a href="http://twitter.com/chemforyourlife">Twitter</a>, and <a href="http://facebook.com/chemforyourlife">Facebook</a> @ChemForYourLife.<br>We love using Transistor to host our podcast -&gt; <a href="https://transistor.fm/?via=jam">Check it out to be sure your podcast makes a bang.</a></p> <strong> <a href="http://patreon.com/chemforyourlife" rel="payment" title="★ Support this podcast on Patreon ★">★ Support this podcast on Patreon ★</a> </strong>