How do thermoses keep coffee hot?
Chemistry For Your Life
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Is There a Perfect Vacuum Seal?
We use these exact things as your water bottles in our chemistry lab. They're actually made of glass and there's more to it in terms of keeping energy because it's a glass that's mirrored. But they definitely insulate the thermal energy by being a perfectly vacuum sealed. It has a perfect vacuum layer of insulation for the for the doer. Even when the top is open, but we had it made, we fashioned ourselves a lid out of film and put it on there. And then we broke it or do it. So as a just for science, you get broken.
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