Will a thermos with hot coffee stored in a refrigerator for more then 3 hours remain hot or will it cool down with the external cold? Coffee

It sounds kind of obvious that it will cool down, but because of the way vacuum insulated thermos' work made me wonder about this.

Submitted February 02, 2017 at 07:22AM by ninj0e http://ift.tt/2k0FqAO Coffee