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Publication Citation: Determination of the Planck constant using a watt balance with a superconducting magnet system at the National Institute of Standards and Technology

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Author(s): Stephan Schlamminger; Darine El Haddad; Frank C. Seifert; Leon S. Chao; David B. Newell; Richard L. Steiner; Jon R. Pratt;
Title: Determination of the Planck constant using a watt balance with a superconducting magnet system at the National Institute of Standards and Technology
Published: March 31, 2014
Abstract: In the past two years measurements were performed with a watt balance at the National Institute of Standards and Technology (NIST) to determine the Planck constant. A detailed analysis of these measurements and their uncertainties led to a value of h=6.626 069 88(38) x 10^-34 Js. The relative uncertainty is 57 x 10^-9 . This result is 154 x 10^-9 higher than h90
Citation: Metrologia
Volume: 51
Pages: pp. S15 - S24
Keywords: Planck constant; electronic kilogram
Research Areas: Weights & Measures
DOI: http://dx.doi.org/10.1088/0026-1394/51/2/S15  (Note: May link to a non-U.S. Government webpage)
PDF version: PDF Document Click here to retrieve PDF version of paper (494KB)