Today we looked at how a thermos can keep stuff hot or cold. We noted the shiny inside of the thermos and how it would reflect radiant heat. We also noted the vacuum in the double lining, and how that would stop convection and conduction. Convection isn’t much of a problem because it is hard to establish a current in this small a space, but still possible…Here’s a website with the information again http://home.howstuffworks.com/thermos.htm
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