Title :
The 2012 North American Watt Balance Absolute Gravity Comparison
Author :
Newell, D.B. ; Inglis, A.D. ; Eckl, M.C. ; Liard, J.O. ; Silliker, R.J. ; Gagnon, C.G.L.
Author_Institution :
Nat. Inst. of Stand. & Technol., Gaithersburg, MD, USA
Abstract :
We report on a 2012 absolute gravity comparison performed at the National Institute of Standards and Technology (NIST), Gaithersburg, MD. Unique to this work is the direct comparison of gravitational measurement systems used in the determination of the Planck constant by NIST and the National Research Council Canada (NRC) watt balances. The results will provide verification of the gravity values used in recently published Planck constant determinations that play a vital role in the redefinition effort of the International system of Units (SI).
Keywords :
constants; measurement standards; NIST; National Institute of Standards and Technology; Planck constant; gravitational measurement systems; international system of units; watt balance absolute gravity; Atmospheric measurements; Gravity; Gravity measurement; NIST; Sea measurements; Silicon; Uncertainty; fundamental constants; gravity; international system of units; watt balance;
Conference_Titel :
Precision Electromagnetic Measurements (CPEM), 2012 Conference on
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4673-0439-9
DOI :
10.1109/CPEM.2012.6250940
