Title :
Determination of the Planck constant at the national institute of Standards and Technology
Author :
Schlamminger, Stephan ; Haddad, Darine ; Seifert, Frank ; Chao, Leon S. ; Newell, David B. ; Liu, Richard ; Steiner, R.L. ; Pratt, Jon R.
Author_Institution :
Nat. Inst. of Stand. & Technol. (NIST), Gaithersburg, MD, USA
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) × 10-34 Js. The relative standard uncertainty of this determination is 45 × 10-9.
Keywords :
constants; measurement uncertainty; weighing; Planck constant measurement; relative standard uncertainty; watt balance; Current measurement; Force; NIST; Uncertainty; Voltage measurement; Planck constant; SI units; fundamental electrical measurements; watt balance;
Conference_Titel :
Precision Electromagnetic Measurements (CPEM 2014), 2014 Conference on
Conference_Location :
Rio de Janeiro
Print_ISBN :
978-1-4799-5205-2
DOI :
10.1109/CPEM.2014.6898443
