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by mrt
Thu Jan 10, 2019 2:56 am UTC
Forum: Science
Topic: Copper in vacuum thermos
Replies: 10
Views: 3981

Re: Copper in vacuum thermos

I wondered the same thing and most of the information given is bogus, including some of the ads for these bottles. The copper is only on the outside of the inner wall (not in contact with the contents) and is to block radiant heat. It is not intuitive, but copper has a much lower emissivity than sta...

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