A Eichenberger et al 2003 Metrologia 40 356 doi:10.1088/0026-1394/40/6/007
Tracing Planck's constant to the kilogram by electromechanical methods
A Eichenberger, B Jeckelmann and P Richard
Show affiliationsAmong the priority tasks in the further development of the International System of Units is the redefinition of the kilogram based on fundamental constants. One of the strategies pursued today is to relate mass to Planck's constant h using the equivalence between mechanical and electrical energies. In this paper, possible experimental approaches in this direction are described. The approach which promises to reach the required uncertainty at the earliest is the concept of the moving-coil watt balance. The status of the different watt balance experiments is reviewed in detail.
- PACS
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06.20.Jr Determination of fundamental constants
84.71.Ba Superconducting magnets; magnetic levitation devices
77.65.-j Piezoelectricity and electromechanical effects
85.70.Rp Magnetic levitation, propulsion and control devices
- Subjects
- Dates
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Issue 6 (December 2003)
Received 10 June 2003
Published 27 November 2003
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Tracing Planck's constant to the kilogram by electromechanical methods
A Eichenberger et al 2003 Metrologia 40 356
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