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PUBLICATIONS

Determination of the Planck constant at the National Institute of Standards and Technology

Published

Author(s)

Stephan Schlamminger, Darine El Haddad, Frank C. Seifert, Leon S. Chao, David B. Newell, Ruimin Liu, Richard L. Steiner, Jon R. Pratt

Abstract

In 2013, a new measurement of the Planck constant h was performed using a watt balance at the National Institute of Standards and Technology (NIST). The value is h=6.626 069 79(30) x 10^{-34} J s. The relative standard uncertainty of this determination is 45 x 10^{-9}.
Proceedings Title
Digest of the Conference on Precision Electromagnetic Measurements
Conference Dates
August 24-29, 2014
Conference Location
Rio de Janeiro
Conference Title
Conference on Precision Electromagnetic Measurements (CPEM)
Pub Type
Conferences

Keywords

fundamental electrical measurements, watt balance, Planck constant, SI unit
Metrology and Mass metrology

Citation

Schlamminger, S. , El, D. , Seifert, F. , Chao, L. , Newell, D. , Liu, R. , Steiner, R. and Pratt, J. (2014), Determination of the Planck constant at the National Institute of Standards and Technology, Digest of the Conference on Precision Electromagnetic Measurements, Rio de Janeiro, -1 (Accessed March 13, 2025)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created July 1, 2014, Updated October 24, 2019