Determination and correction of mass exchange errors in the NRC watt balance

DOIResolve DOI: http://doi.org/10.1109/CPEM.2012.6250986
AuthorSearch for: ; Search for: ; Search for: ; Search for:
TypeArticle
Conference2012 Conference on Precision Electromagnetic Measurements (CPEM 2012), 2012-07-1 - 2012-07-6, Washington, DC, USA
ISBN978-1-4673-0442-9
978-1-4673-0439-9
978-1-4673-0441-2
Pages428429; # of pages: 2
SubjectBeam balance; Planck's constant; electronic kilogram; fundamental constants; watt balance
AbstractWe have investigated mass exchange corrections in the NRC watt balance. Two effects arising from mass exchanges during the weighing phase produce significant systematic errors in measurements of the Planck constant (h). These effects were estimated and corresponding corrections were applied to measurements of h made at NRC between August and September of 2011 An effect due to tilting of the beam required an estimated correction of (0.238 ± 0.018) μW/W and an effect due to tilting of the flat, which supports the beam, required an estimated correction of (-0.636 ± 0.056) μW/W.
PublisherIEEE
LanguageEnglish
AffiliationMeasurement Science and Standards; National Research Council Canada
Peer reviewedYes
NPARC number21269118
Export citationExport as RIS
Report a correctionReport a correction
Record identifier9fd7267b-a11f-45c6-a5b0-3b143811fda9
Record created2013-12-06
Record modified2016-05-09
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)