Keeping things hot and cold

I used to wonder how thermos bottles knew how to keep hot things hot and cold things cold. Apparently, its just something that’s built in.

I saw something at the store the other day that seemed like a breakthrough, something that might add to my understanding of the physical properties involved: it’s an insulated bag, advertised to “keep hot things hot and cold things cold”. I really had to have one of these, to put it to the test.

In the morning, I put in a cup of coffee and an ice cream cone, then closed it.

What a disappointment!!!!! When I opened it later that day, the coffee was cold and the ice cream had melted.

I’m going to have to take it back. It doesn’t work as adverticed.

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One response to “Keeping things hot and cold

  1. Haha really made me laugh!

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