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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, -1
Conference Title
Conference on Precision Electromagnetic Measurements (CPEM)

Keywords

fundamental electrical measurements, watt balance, Planck constant, SI unit
Created July 1, 2014, Updated October 24, 2019