1PHYSICALCONSTANTSTable11Reviewed2010byPJMohrNISTMainlyfromthe ID: 330613
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1.Physicalconstants 1.PHYSICALCONSTANTSTable1.1.Reviewed2010byP.J.Mohr(NIST).MainlyfromtheCODATARecommendedValuesoftheFundamentalPhysicalConstants:2006byP.J.Mohr,B.N.Taylor,andD.B.NewellinRev.Mod.Phys.(2008)633.Thelastgroupofconstants(beginningwiththeFermicouplingconstant)comesfromtheParticleDataGroup.Theguresinparenthesesafterthevaluesgivethe1-standard-deviationuncertaintiesinthelastdigits;thecorrespondingfractionaluncertaintiesinpartsper10(ppb)aregiveninthelastcolumn.Thissetofconstants(asidefromthelastgroup)isrecommendedforinternationalusebyCODATA(theCommitteeonDataforScienceandTechnology).Thefull2006CODATAsetofconstantsmaybefoundathttp://physics.nist.gov/constants.SeealsoP.J.MohrandD.B.Newell,ResourceLetterFC-1:ThePhysicsofFundamentalConstants,Am.J.Phys,(2010)338. QuantitySymbol,equationValueUncertainty(ppb) speedoflightinvacuum299792458ms electronmass0.510998910(13)MeV=9.10938215(45)kg25,50protonmass938.272013(23)MeV=1.672621637(83)kg25,50=1.00727646677(10)u=1836.15267247(80)0.10,0.43deuteronmass1875.612793(47)MeVuniedatomicmassunit(u)(mass permittivityoffreespace8.854187817permeabilityoffreespace=12.566370614 ne-structureconstant7.2973525376(50)035999679(94)0.68,0.68classicalelectronradius2.8179402894(58)m2.1Comptonwavelength)/2 Bohrmagneton gravitationalconstant6.67428(67)=6.70881(67) Avogadroconstant6.02214179(30)molBoltzmannconstant1.3806504(24)=8.617343(15)eVKmolarvolume,idealgasatSTP(273.15K)/(101325Pa)22.413996(39)molWiendisplacementlawconstantmax2.8977685(51)mK1700Stefan-Boltzmannconstant5.670400(40) Fermicouplingconstant )0.23116(13)bosonmass80.399(23)GeVbosonmass91.1876(21)GeVstrongcouplingconstant)0.1184(7)5 =3.141592653589793238e=2.718281828459045235=0.577215664901532861 1in0254m1nm1barn1dyne Themeteristhelengthofthepathtraveledbylightinvacuumduringatimeintervalof1/299792458ofasecond.=0.AtthevalueisAbsolutelabmeasurementsofhavebeenmadeonlyonscalesofabout1cmto1m.SeethediscussioninSec.10,Electroweakmodelandconstraintsonnewphysics.Thecorrespondingsinfortheeectiveangleis0.23146(12).