Stray capacitances in the watt balance operation: electrostatic forces

Quagliotti, Danilo; Mana, Giovanni

doi:10.1088/0026-1394/51/2/s72

Cited by 3 publications

(3 citation statements)

References 18 publications

(29 reference statements)

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“…Some improvements will be made by the painstaking identification of problem areas or by careful theoretical analysis of possible sources of uncertainty [150][151][152][153][154][155]. However, some improvements may come about by technological improvements in related areas which will allow measurements critical to the Kibble balance to be carried out either more easily or with lower uncertainties.…”

Section: Improvements To Existing Techniquesmentioning

confidence: 99%

The watt or Kibble balance: a technique for implementing the new SI definition of the unit of mass

2016

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The redefinition of the SI unit of mass in terms of a fixed value of the Planck constant has been made possible by the Kibble balance, previously known as the watt balance. Once the new definition has been adopted, the Kibble balance technique will permit the realisation of the mass unit over a range from milligrams to kilograms. We describe the theory underlying the Kibble balance and practical techniques required to construct such an instrument to relate a macroscopic physical mass to the Planck constant with an uncertainty, which is achievable at present, in the region of 2 parts in 10 8 . A number of Kibble balances have either been built or are under construction and we compare the principal features of these balances.

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Section: Improvements To Existing Techniquesmentioning

confidence: 99%

The watt or Kibble balance: a technique for implementing the new SI definition of the unit of mass

2016

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“…During the latest years, some efforts have been paid to investigate possible systematic errors of both a watt balance and the Avogadro project (e.g., Refs. [115]- [118]). In future, on one hand, further and detailed investigation on current operated watt balance and Avogadro project should continue; on the other hand, other methods for precision measurement of the Planck constant should be encouraged.…”

Section: Summary Of the Planck Constant Determinationmentioning

confidence: 99%

Progress on accurate measurement of the Planck constant: Watt balance and counting atoms

Zhang

Zhao

et al. 2015

Chinese Phys. B

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“…The difference between these results is caused by certain systematic errors. During the latest years, some efforts have been paid on investigating possible systematic errors of both a watt balance and the Avogadro project, e.g., [115,116,117,118]. In future, on the one hand, further and detailed investigation on current operated watt balance and Avogadro project should continue; on the other hand, other methods for precision measurement of the Planck constant should be encouraged [119].…”

Section: Summary Of the Planck Constant Determinationmentioning

confidence: 99%

Progress on accurate measurement of the Planck constant: watt balance and counting atoms

Li,

Zhang,

Zhao

et al. 2014

Preprint

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The Planck constant h is one of the most significant constants in quantum physics. Recently, the precision measurement of the numeral value of h has been a hot issue due to its important role in establishment for both a new SI and a revised fundamental physical constant system. Up to date, two approaches, the watt balance and counting atoms, have been employed to determine the Planck constant at a level of several parts in 10 8 . In this paper, the principle and progress on precision measurement of the Planck constant using watt balance and counting atoms at national metrology institutes are reviewed. Further improvements for the Planck constant determination and possible developments of a revised physical constant system in future are discussed.

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Stray capacitances in the watt balance operation: electrostatic forces

Cited by 3 publications

References 18 publications

The watt or Kibble balance: a technique for implementing the new SI definition of the unit of mass

The watt or Kibble balance: a technique for implementing the new SI definition of the unit of mass

Progress on accurate measurement of the Planck constant: Watt balance and counting atoms

Progress on accurate measurement of the Planck constant: watt balance and counting atoms

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