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March 28, 2017

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what is the purpose of the double bell jars that surround the international prototype of the kilogram in Paris?

  • Physics - ,

    Isn't it to keep the air out and reduce the chance of oxidation?

  • Physics - ,

    Is there a vacuum under the jars or is it just been air sealed with air already under it?

  • Physics - ,

    There is a vacumn.

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