When are two nominally identical kilogram masses no longer identical? When each goes to a different place and adsorbs varying amounts of moisture and contaminants.
White cat hair on black pants: Study measures stability of precision masses to benefit trade
Phys.org - 26 Nov 2018 23:54
When are two nominally identical kilogram masses no longer identical? When each goes to a different place and adsorbs varying amounts of moisture and contaminants.
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