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A new definition of the kilogram based on the Einstein relations E = mc^2 and E = hv is proposed, motivated by the recent progress at the National Institute of Standards and Technology in developing a moving-coil watt balance. Such a balance together with the definition promises to provide a practical means of directly calibrating standards of mass.
Citation
None
Pub Type
Journals
Keywords
International System of Units, kg, kilogram, Planck constant, SI, watt balance
Citation
Taylor, B.
and Mohr, P.
(1998),
On the Redefinition of the Kilogram, None
(Accessed October 11, 2025)