A determination of Planck's constant using the NRC watt balance

A determination of Planck's constant using the NRC watt balance

We have measured Planck's constant and have obtained a value of 6.626 070 34(12) × 10−34 J s. To our knowledge this measurement of h has the lowest uncertainty reported to date. This result has been obtained from measurements of four masses of different material and nominal values varying from...

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Veröffentlicht in:Metrologia 2014-04, Vol.51 (2), p.S5-S14
Hauptverfasser: Sanchez, C A, Wood, B M, Green, R G, Liard, J O, Inglis, D
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kilogram
Knowledge
Measurement
Metrology
Planck's constant
Uncertainty
watt balance
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container_end_page S14
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container_title Metrologia
container_volume 51
creator Sanchez, C A
Wood, B M
Green, R G
Liard, J O
Inglis, D
description We have measured Planck's constant and have obtained a value of 6.626 070 34(12) × 10−34 J s. To our knowledge this measurement of h has the lowest uncertainty reported to date. This result has been obtained from measurements of four masses of different material and nominal values varying from 1 kg to 250 g. The experimental procedures and the measurement uncertainties are described in detail.
doi_str_mv 10.1088/0026-1394/51/2/S5
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subjects kilogram
Knowledge
Measurement
Metrology
Planck's constant
Uncertainty
watt balance
title A determination of Planck's constant using the NRC watt balance
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