Title :
Results from the METAS watt balance
Author :
Eichenberger, A.L. ; Baumann, H. ; Jeanneret, B. ; Jeckelmann, B.
Author_Institution :
Fed. Office of Metrol. METAS, Bern-Wabern, Switzerland
Abstract :
The METAS watt balance project has been in operation for 10 years. After different improvements and modifications, the present setup allows a reproducibility for a two weeks measurement series of 0.05 × 10-6 W/W. The analysis of several measurement campaigns is underway to produce a value of the Planck´s constant h in the near future.
Keywords :
balances; mass measurement; METAS watt balance project; Planck constant; Coils; Force measurement; Laser beams; Laser stability; Magnetic levitation; Mechanical variables measurement; Mirrors; Optical detectors; Optical devices; Reproducibility of results;
Conference_Titel :
Precision Electromagnetic Measurements (CPEM), 2010 Conference on
Conference_Location :
Daejeon
Print_ISBN :
978-1-4244-6795-2
DOI :
10.1109/CPEM.2010.5544254
