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Richard
Lv 4
What is the best insulator?
For a given thickness, which has the highest breakdown voltage?
Air, mica, porcelain, hard rubber
2 Answers
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- gintableLv 71 decade agoFavorite Answer
The absolute best insulator of both heat and electric current is a vacuum.
Although to thermally insulate perfectly...you also need to enclose the vacuum in reflective boundaries...because there is one mode of heat transfer (radiation) that the vacuum can do nothing about.
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