A new28Si single crystal: counting the atoms for the new kilogram definition
نویسندگان
چکیده
منابع مشابه
A Better Definition of the Kilogram
Fixing the value of Avogadro’s constant, the number of atoms in 12 grams of carbon-12, at exactly 84446886 would imply that one gram is the mass of exactly 18×14074481 carbon-12 atoms. This new definition of the gram, and thereby also the kilogram, is precise, elegant and unchanging in time, unlike the current 118-year-old artifact kilogram in Paris and the proposed experimental definitions of ...
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15 صفحه اولOn a natural definition of the kilogram and the ampere
We consider a recent proposal [1] to redefine the kilogram in terms of natural constants. In our opinion, the main objective of the redefinition should be to build such a version of the SI system in which the electric measurements are possible with the highest accuracy in SI units, and not in practical units as now. We emphasize that this objective can be achieved only with a simultaneous redef...
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15 صفحه اولThe New Kilogram Definition and its Implications for High-Precision Mass Tolerance Classes
The SI unit of mass, the kilogram, is the only remaining artifact definition in the seven fundamental units of the SI system. It will be redefined in terms of the Planck constant as soon as certain experimental conditions, based on recommendations of the Consultative Committee for Mass and Related Quantities (CCM) are met. To better reflect reality, the redefinition will likely be accompanied b...
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ژورنال
عنوان ژورنال: Metrologia
سال: 2017
ISSN: 0026-1394,1681-7575
DOI: 10.1088/1681-7575/aa7820