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Where is the headquarters for the organization that maintains SI standards?
Wiki User
∙ 9y ago
The only standard unit that has a physical presence is the unit if mass. The Kilogram. It is kept in Paris.
The metre was originally a length of bar also kept in Paris, this, as a standard, has now been superseded though the bar still exists.
add Currently work is under way to manufacture almost perfectly spherical spheres (made of Silicon I think?) and the number of atoms of Si in these spheres will be known to a high degree of precision.
Many standards laboratories still have physical blobs of length and mass for convenience in transferring the Standards to Industry.
Wiki User
∙ 13y ago
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