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{{#switch: {{{1}}} <!-- explanation of |_name_ = {{#switch: {{{2}}} |symbol = _symbol_ |val = _significand of value_ |un1 = _standard uncertainty in significand of value_ |unc = (_standard uncertainty digits for compact form; blank if exact_) |exp = _exponent of value_ |unit = _unit of constant_ |runc = _significand of relative standard uncertainty_ |rexp = _exponent of relative standard uncertainty_ |ref = _reference footnote_ }} --> |a0 = {{#switch: {{{2}}} |symbol = ''a''<sub>0</sub> |val = 5.29177210903 |un1 = 0.00000000080 |unc = (80) |exp = -11 |unit = m |runc = 1.5 |rexp = -10 |ref = <ref name="physconst-a0">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?bohrrada0 |title=2018 CODATA Value: Bohr radius |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |alpha = {{#switch: {{{2}}} |symbol = ''α'' |val = 7.2973525693 |un1 = 0.0000000011 |unc = (11) |exp = -3 |runc = 1.5 |rexp = -10 |unit = |ref = <ref name="physconst-alpha">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?alph |title=2018 CODATA Value: fine-structure constant |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |atm = {{#switch: {{{2}}} |symbol = atm |val = 101325 |un1 = |unc = |exp = |unit = Pa |runc = 0 |rexp = |ref = <ref name="physconst-atm">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?stdatm |title=2018 CODATA Value: standard atmosphere |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |A90 = {{#switch: {{{2}}} |symbol = ''A''<sub>90</sub> |val = 1.00000008887 |end = ... |un1 = |unc = |exp = |unit = A |runc = 0 |rexp = |ref = <ref name="physconst-A90">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?ampere90 |title=2018 CODATA Value: conventional value of ampere-90 |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-06-01}}</ref> }} |bwien = {{#switch: {{{2}}} |symbol = ''b'' |val = 2.897771955 |un1 = |unc = |end = ... |exp = -3 |unit = m⋅K |runc = 0 |rexp = |ref = <ref name="physconst-bwien">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?bwien |title=2018 CODATA Value: Wien wavelength displacement law constant |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |bwien' = {{#switch: {{{2}}} |symbol = ''b''′ |val = 5.878925757 |un1 = |unc = |end = ... |exp = 10 |unit = Hz⋅K<sup>−1</sup> |runc = 0 |rexp = |ref = <ref name="physconst-bwienf">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?bpwien |title=2018 CODATA Value: Wien frequency displacement law constant |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |c = {{#switch: {{{2}}} |symbol = ''c'' |val = 299792458 |un1 = |unc = |exp = |unit = m⋅s<sup>−1</sup> |runc = 0 |rexp = |ref = <ref name="physconst-c">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?c |title=2018 CODATA Value: speed of light in vacuum |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |c1 = {{#switch: {{{2}}} |symbol = ''c''<sub>1</sub> |val = 3.741771852 |un1 = |unc = |end = ... |exp = -16 |unit = W⋅m<sup>2</sup> |runc = 0 |rexp = |ref = <ref name="physconst-c1">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?c11strc |title=2018 CODATA Value: first radiation constant |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |c1L = {{#switch: {{{2}}} |symbol = ''c''<sub>1L</sub> |val = 1.191042972 |un1 = |unc = |end = ... |exp = -16 |unit = W⋅m<sup>2</sup>⋅sr<sup>−1</sup> |runc = 0 |rexp = |ref = <ref name="physconst-c1L">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?c1l |title=2018 CODATA Value: first radiation constant for spectral radiance |date=20 May 2019|work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |c2 = {{#switch: {{{2}}} |symbol = ''c''<sub>2</sub> |val = 1.438776877 |un1 = |unc = |end = ... |exp = -2 |unit = m⋅K |runc = 0 |rexp = |ref = <ref name="physconst-c2">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?c22ndrc |title=2018 CODATA Value: second radiation constant |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |C90 = {{#switch: {{{2}}} |symbol = ''C''<sub>90</sub> |val = 1.00000008887 |end = ... |un1 = |unc = |exp = |unit = C |runc = 0 |rexp = |ref = <ref name="physconst-C90">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?charge90 |title=2018 CODATA Value: conventional value of coulomb-90 |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-06-01}}</ref> }} |DnuCs = {{#switch: {{{2}}} |symbol = Δ''ν''(<sup>133</sup>Cs)<sub>hfs</sub> |val = 9192631770 |un1 = |unc = |exp = |unit = Hz |runc = 0 |rexp = |ref = <ref name="physconst-DnuCs">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?nucs |title=2018 CODATA Value: hyperfine transition frequency of Cs-133 |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-08-18}}</ref> }} |e = {{#switch: {{{2}}} |symbol = ''e'' |val = 1.602176634 |un1 = |unc = |exp = -19 |unit = C |runc = 0 |rexp = |ref = <ref name="physconst-e">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?e |title=2018 CODATA Value: elementary charge |date=20 May 2019| work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |eps0 = {{#switch: {{{2}}} |symbol = ''ε''<sub>0</sub> |val = 8.8541878128 |un1 = 0.0000000013 |unc = (13) |exp = -12 |unit = F⋅m<sup>−1</sup> |runc = 1.5 |rexp = -10 |ref = <ref name="physconst-eps0">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?ep0 |title=2018 CODATA Value: vacuum electric permittivity |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |eV = {{#switch: {{{2}}} |symbol = eV |val = 1.602176634 |un1 = |unc = |exp = -19 |unit = J |runc = 0 |rexp = |ref = <ref name="physconst-eV">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?evj |title=2018 CODATA Value: electron volt |date=20 May 2019|work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |-e/me = {{#switch: {{{2}}} |symbol = −''e''/''m''<sub>e</sub> |val = -1.75882001076 |un1 = 0.00000000053 |unc = (53) |exp = 11 |unit = C⋅kg<sup>−1</sup> |runc = 3.0 |rexp = -10 |ref = <ref name="physconst-e/me">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?esme |title=2018 CODATA Value: electron charge to mass quotient |date=20 May 2019|work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-10-22}}</ref> }} |Eh = {{#switch: {{{2}}} |symbol = ''E''<sub>h</sub> |val = 4.3597447222071 |un1 = 0.0000000000085 |unc = (85) |exp = -18 |unit = J |runc = 1.9 |rexp = -12 |ref = <ref name="physconst-Eh">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?hr |title=2018 CODATA Value: Hartree energy |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |Eh_eV = {{#switch: {{{2}}} |symbol = ''E''<sub>h</sub> |val = 27.211386245988 |un1 = 0.0000000000053 |unc = (53) |exp = |runc = 1.9 |rexp = -12 |unit = eV |ref = <ref name="physconst-EheV">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?hrev |title=2018 CODATA Value: Hartree energy in eV |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-09-01}}</ref> }} |F = {{#switch: {{{2}}} |symbol = ''F'' |val = 9.648533212 |un1 = |unc = |end = ... |exp = 4 |unit = C⋅mol<sup>−1</sup> |runc = 0 |rexp = |ref = <ref name="physconst-F">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?f |title=2018 CODATA Value: Faraday constant |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |F90 = {{#switch: {{{2}}} |symbol = ''F''<sub>90</sub> |val = 0.99999998220 |end = ... |un1 = |unc = |exp = |unit = F |runc = 0 |rexp = |ref = <ref name="physconst-F90">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?capacitance90 |title=2018 CODATA Value: conventional value of farad-90 |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-06-01}}</ref> }} |g0 = {{#switch: {{{2}}} |symbol = ''g''<sub>0</sub> |val = 9.80665 |un1 = |unc = |exp = |unit = m⋅s<sup>−2</sup> |runc = 0 |rexp = |ref = <ref name="physconst-g0">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?gn |title=2018 CODATA Value: standard acceleration of gravity |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |ge = {{#switch: {{{2}}} |symbol = ''g''<sub>e<sup>−</sup></sub> |val = -2.00231930436256 |un1 = 0.00000000000035 |unc = (35) |exp = |unit = |runc = 1.7 |rexp = -13 |ref = <ref name="physconst-ge">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?gem |title=2018 CODATA Value: electron g factor |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2020-03-13}}</ref> }} |gmu = {{#switch: {{{2}}} |symbol = ''g''<sub>μ<sup>−</sup></sub> |val = -2.0023318418 |un1 = 0.0000000013 |unc = (13) |exp = |unit = |runc = 6.3 |rexp = -10 |ref = <ref name="physconst-gmu">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?gmum |title=2018 CODATA Value: muon g factor |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |gn = {{#switch: {{{2}}} |symbol = ''g''<sub>n</sub> |val = -3.82608545 |un1 = 0.00000090 |unc = (90) |exp = |unit = |runc = 2.4 |rexp = -7 |ref = <ref name="physconst-gn">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?gnn |title=2018 CODATA Value: neutron g factor |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2023-06-13 }}</ref> }} |gp = {{#switch: {{{2}}} |symbol = ''g''<sub>p</sub> |val = 5.5856946893 |un1 = 0.0000000016 |unc = (16) |exp = |unit = |runc = 2.9 |rexp = -10 |ref = <ref name="physconst-gp">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?gp |title=2018 CODATA Value: proton g factor |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-03-08 }}</ref> }} |gammae = {{#switch: {{{2}}} |symbol = ''γ''<sub>e</sub> |val = 1.76085963023 |un1 = 0.000 0000053 |unc = (53) |exp = 11 |unit = s<sup>−1</sup>⋅T<sup>−1</sup> |runc = 3.0 |rexp = -10 |ref = <ref name="physconst-gammae">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?gammae |title=2018 CODATA Value: electron gyromagnetic ratio |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2022-09-19 }}</ref> }} |gamman = {{#switch: {{{2}}} |symbol = ''γ''<sub>n</sub> |val = 1.83247171 |un1 = 0.00000043 |unc = (43) |exp = 8 |unit = s<sup>−1</sup>⋅T<sup>−1</sup> |runc = 2.4 |rexp = -7 |ref = <ref name="physconst-gamman">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?gamman |title=2018 CODATA Value: neutron gyromagnetic ratio |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2022-09-19 }}</ref> }} |gammap = {{#switch: {{{2}}} |symbol = ''γ''<sub>p</sub> |val = 2.6752218744 |un1 = 0.0000000011 |unc = (11) |exp = 8 |unit = s<sup>−1</sup>⋅T<sup>−1</sup> |runc = 4.2 |rexp = -10 |ref = <ref name="physconst-gammap">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?gammap |title=2018 CODATA Value: proton gyromagnetic ratio |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2022-09-19 }}</ref> }} |G = {{#switch: {{{2}}} |symbol = ''G'' |val = 6.67430 |un1 = 0.00015 |unc = (15) |exp = -11 |unit = m<sup>3</sup>⋅kg<sup>−1</sup>⋅s<sup>−2</sup> |runc = 2.2 |rexp = -5 |ref = <ref name="physconst-G">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?bg |title=2018 CODATA Value: Newtonian constant of gravitation |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |G0 = {{#switch: {{{2}}} |symbol = ''G''<sub>0</sub> |val = 7.748091729 |un1 = |unc = |end = ... |exp = -5 |unit = S |runc = 0 |rexp = |ref = <ref name="physconst-G0">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?conqu2e2sh |title=2018 CODATA Value: conductance quantum |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |GF/hbarc3 = {{#switch: {{{2}}} |symbol = ''G''<sub>F</sub>/(''ħc'')<sup>3</sup> |val = 1.1663787 |un1 = 0.0000006 |unc = (6) |exp = -5 |unit = GeV<sup>−2</sup> |runc = 5.1 |rexp = -7 |ref = <ref name="physconst-GF">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?gf |title=2018 CODATA Value: Fermi coupling constant |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |h = {{#switch: {{{2}}} |symbol = ''h'' |val = 6.62607015 |un1 = |unc = |exp = -34 |unit = J⋅Hz<sup>−1</sup> |runc = 0 |rexp = |ref = <ref name="physconst-h">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?h |title=2018 CODATA Value: Planck constant |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2021-04-28}}</ref> }} |h_eV/Hz = {{#switch: {{{2}}} |symbol = ''h'' |val = 4.135667696 |un1 = |unc = |end = ... |exp = -15 |unit = eV⋅Hz<sup>−1</sup> |runc = 0 |rexp = |ref = <ref name="physconst-heV">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?hev |title=2018 CODATA Value: Planck constant in eV/Hz |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2021-04-29}}</ref> }} |hbar = {{#switch: {{{2}}} |symbol = ''ħ'' |val = 1.054571817 |un1 = |unc = |end = ... |exp = -34 |unit = J⋅s |runc = 0 |rexp = |ref = <ref name="physconst-hbar">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?hbar |title=2018 CODATA Value: reduced Planck constant |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-08-28}}</ref> }} |hbar_eVs = {{#switch: {{{2}}} |symbol = ''ħ'' |val = 6.582119569 |un1 = |unc = |end = ... |exp = -16 |unit = eV⋅s |runc = 0 |rexp = |ref = <ref name="physconst-hbarev">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?hbarev |title=2018 CODATA Value: reduced Planck constant in eV s |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2021-04-29}}</ref> }} |h/2me = {{#switch: {{{2}}} |symbol = ''h''/2''m''<sub>e</sub> |val = 3.6369475516 |un1 = 0.0000000011 |unc = (11) |exp = -4 |unit = m<sup>2</sup>⋅s<sup>−1</sup> |runc = 3.0 |rexp = -10 |ref = <ref name="physconst-h/2me">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?qucirchs2me |title=2018 CODATA Value: quantum of circulation |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |H90 = {{#switch: {{{2}}} |symbol = ''H''<sub>90</sub> |val = 1.00000001779 |end = ... |un1 = |unc = |exp = |unit = H |runc = 0 |rexp = |ref = <ref name="physconst-H90">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?inductance90 |title=2018 CODATA Value: conventional value of henry-90 |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-06-01}}</ref> }} |invalpha = {{#switch: {{{2}}} |symbol = 1/''α'' |val = 137.035999084 |un1 = 0.000000021 |unc = (21) |exp = |unit = |runc = 1.5 |rexp = -10 |ref = <ref name="physconst-invalpha">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?alphinv |title=2018 CODATA Value: inverse fine-structure constant |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |invG0 = {{#switch: {{{2}}} |symbol = ''G''<sub>0</sub><sup>−1</sup> |val = 12906.40372 |un1 = |unc = |end = ... |exp = |unit = Ω |runc = 0 |rexp = |ref = <ref name="physconst-invG0">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?invconqu |title=2018 CODATA Value: inverse of conductance quantum |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |k = {{#switch: {{{2}}} |symbol = ''k'' |val = 1.380649 |un1 = |unc = |exp = -23 |unit = J⋅K<sup>−1</sup> |runc = 0 |rexp = |ref = <ref name="physconst-k">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?k |title=2018 CODATA Value: Boltzmann constant |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |KJ = {{#switch: {{{2}}} |symbol = ''K''<sub>J</sub> |val = 483597.8484 |un1 = |unc = |end = ... |exp = 9 |unit = Hz⋅V<sup>−1</sup> |runc = 0 |rexp = |ref = <ref name="physconst-KJ">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?kjos |title=2018 CODATA Value: Josephson constant |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |KJ90 = {{#switch: {{{2}}} |symbol = ''K''<sub>J-90</sub> |val = 483597.9 |un1 = |unc = |exp = 9 |unit = Hz⋅V<sup>−1</sup> |runc = 0 |rexp = |ref = <ref name="physconst-KJ90">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?kj90 |title=2018 CODATA Value: conventional value of Josephson constant |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |lP = {{#switch: {{{2}}} |symbol = ''l''<sub>P</sub> |val = 1.616255 |un1 = 0.000018 |unc = (18) |exp = -35 |unit = m |runc = 1.1 |rexp = -5 |ref = <ref name="physconst-lP">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?plkl |title=2018 CODATA Value: Planck length |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |malpha = {{#switch: {{{2}}} |symbol = ''m''<sub>α</sub> |val = 6.6446573357 |un1 = 0.0000000020 |unc = (20) |exp = -27 |unit = kg |runc = 3.0 |rexp = -10 |ref = <ref name="physconst-malpha">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?mal |title=2018 CODATA Value: alpha particle mass |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2022-09-10}}</ref> }} |malpha_Da = {{#switch: {{{2}}} |symbol = ''m''<sub>α</sub> |val = 4.001506179127 |un1 = 0.000000000063 |unc = (63) |exp = |unit = Da |runc = 1.6 |rexp = -11 |ref = <ref name="physconst-malphaDa">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?malu |title=2018 CODATA Value: alpha particle mass in u |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2022-09-11}}</ref> }} |malphac2_GeV = {{#switch: {{{2}}} |symbol = ''m''<sub>α</sub>''c''<sup>2</sup> |val = 3.7273794066 |un1 = 0.0000000011 |unc = (11) |exp = |unit = GeV |runc = 3.0 |rexp = -10 |ref = <ref name="physconst-malphac2GeV">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?malc2mev |title=2018 CODATA Value: alpha particle mass energy equivalent in MeV |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2022-09-11}}</ref> }} |md = {{#switch: {{{2}}} |symbol = ''m''<sub>d</sub> |val = 3.3435837724 |un1 = 0.0000000010 |unc = (10) |exp = -27 |unit = kg |runc = 3.0 |rexp = -10 |ref = <ref name="physconst-md">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?md |title=2018 CODATA Value: deuteron mass |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2022-09-11}}</ref> }} |md_Da = {{#switch: {{{2}}} |symbol = ''m''<sub>d</sub> |val = 2.013553212745 |un1 = 0.000000000040 |unc = (40) |exp = |unit = Da |runc = 2.0 |rexp = -11 |ref = <ref name="physconst-mdDa">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?mdu |title=2018 CODATA Value: deuteron mass in u |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2022-09-11}}</ref> }} |me = {{#switch: {{{2}}} |symbol = ''m''<sub>e</sub> |val = 9.1093837015 |un1 = 0.0000000028 |unc = (28) |exp = -31 |unit = kg |runc = 3.0 |rexp = -10 |ref = <ref name="physconst-me">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?me |title=2018 CODATA Value: electron mass |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |me_Da = {{#switch: {{{2}}} |symbol = ''m''<sub>e</sub> |val = 5.48579909065 |un1 = 0.00000000016 |unc = (16) |exp = -4 |unit = Da |runc = 2.9 |rexp = -11 |ref = <ref name="physconst-meDa">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?meu |title=2018 CODATA Value: electron mass in u |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2020-06-21}}</ref> }} |mec2_MeV = {{#switch: {{{2}}} |symbol = ''m''<sub>e</sub>''c''<sup>2</sup> |val = 0.51099895000 |un1 = 0.00000000015 |unc = (15) |exp = |unit = MeV |runc = 3.0 |rexp = -10 |ref = <ref name="physconst-mec2MeV">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?mec2mev |title=2018 CODATA Value: electron mass energy equivalent in MeV |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2022-07-11}}</ref> }} |mh = {{#switch: {{{2}}} |symbol = ''m''<sub>h</sub> |val = 5.0064127796 |un1 = 0.0000000015 |unc = (15) |exp = -27 |unit = kg |runc = 3.0 |rexp = -10 |ref = <ref name="physconst-mh">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?mh |title=2018 CODATA Value: helion mass |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2022-09-11}}</ref> }} |mh_Da = {{#switch: {{{2}}} |symbol = ''m''<sub>h</sub> |val = 3.014932247175 |un1 = 0.000000000097 |unc = (97) |exp = |unit = Da |runc = 3.2 |rexp = -11 |ref = <ref name="physconst-mhDa">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?mhu |title=2018 CODATA Value: helion mass in u |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2022-09-11}}</ref> }} |mmu = {{#switch: {{{2}}} |symbol = ''m''<sub>μ</sub> |val = 1.883531627 |un1 = 0.000000042 |unc = (42) |exp = -28 |unit = kg |runc = 2.2 |rexp = -8 |ref = <ref name="physconst-mmu">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?mmu |title=2018 CODATA Value: muon mass |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |mmu_Da = {{#switch: {{{2}}} |symbol = ''m''<sub>μ</sub> |val = 0.1134289259 |un1 = 0.0000000025 |unc = (25) |exp = |unit = Da |runc = 2.2 |rexp = -8 |ref = <ref name="physconst-mmuDa">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?mmuu |title=2018 CODATA Value: muon mass in u |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-09-14}}</ref> }} |mmuc2_MeV = {{#switch: {{{2}}} |symbol = ''m''<sub>μ</sub>''c''<sup>2</sup> |val = 105.6583755 |un1 = 0.0000023 |unc = (23) |exp = |unit = MeV |runc = 2.2 |rexp = -8 |ref = <ref name="physconst-mmuc2MeV">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?mmuc2mev |title=2018 CODATA Value: muon mass energy equivalent in MeV |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-09-14}}</ref> }} |mn = {{#switch: {{{2}}} |symbol = ''m''<sub>n</sub> |val = 1.67492749804 |un1 = 0.00000000095 |unc = (95) |exp = -27 |unit = kg |runc = 5.7 |rexp = -10 |ref = <ref name="physconst-mn">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?mn |title=2018 CODATA Value: neutron mass |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-08-23}}</ref> }} |mn_Da = {{#switch: {{{2}}} |symbol = ''m''<sub>n</sub> |val = 1.00866491595 |un1 = 0.00000000049 |unc = (49) |exp = |unit = Da |runc = 4.8 |rexp = -10 |ref = <ref name="physconst-mnDa">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?mnu |title=2018 CODATA Value: neutron mass in u |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2020-06-24}}</ref> }} |mnc2_MeV = {{#switch: {{{2}}} |symbol = ''m''<sub>n</sub>''c''<sup>2</sup> |val = 939.56542052 |un1 = 0.00000054 |unc = (54) |exp = |unit = MeV |runc = 5.7 |rexp = -10 |ref = <ref name="physconst-mnc2MeV">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?mnc2mev |title=2018 CODATA Value: neutron mass energy equivalent in MeV |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2022-09-11}}</ref> }} |mp = {{#switch: {{{2}}} |symbol = ''m''<sub>p</sub> |val = 1.67262192369 |un1 = 0.00000000051 |unc = (51) |exp = -27 |unit = kg |runc = 3.1 |rexp = -10 |ref = <ref name="physconst-mp">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?mp |title=2018 CODATA Value: proton mass |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |mp_Da = {{#switch: {{{2}}} |symbol = ''m''<sub>p</sub> |val = 1.007276466621 |un1 = 0.000000000053 |unc = (53) |exp = |unit = Da |runc = 5.3 |rexp = -11 |ref = <ref name="physconst-mpDa">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?mpu |title=2018 CODATA Value: proton mass in u |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2022-09-11}}</ref> }} |mpc2_MeV = {{#switch: {{{2}}} |symbol = ''m''<sub>p</sub>''c''<sup>2</sup> |val = 938.27208816 |un1 = 0.00000029 |unc = (29) |exp = |unit = MeV |runc = 3.1 |rexp = -10 |ref = <ref name="physconst-mpc2MeV">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?mpc2mev |title=2018 CODATA Value: proton mass energy equivalent in MeV |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2022-09-11}}</ref> }} |mP = {{#switch: {{{2}}} |symbol = ''m''<sub>P</sub> |val = 2.176434 |un1 = 0.000024 |unc = (24) |exp = -8 |unit = kg |runc = 1.1 |rexp = -5 |ref = <ref name="physconst-mP">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?plkm |title=2018 CODATA Value: Planck mass |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |mmu/me = {{#switch: {{{2}}} |symbol = ''m''<sub>μ</sub>/''m''<sub>e</sub> |val = 206.7682830 |un1 = 0.0000046 |unc = (46) |exp = |unit = |runc = 2.2 |rexp = -8 |ref = <ref name="physconst-mmu/me">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?mmusme |title=2018 CODATA Value: muon-electron mass ratio |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-24}}</ref> }} |mp/me = {{#switch: {{{2}}} |symbol = ''m''<sub>p</sub>/''m''<sub>e</sub> |val = 1836.15267343 |un1 = 0.00000011 |unc = (11) |exp = |unit = |runc = 6.0 |rexp = -11 |ref = <ref name="physconst-mpome">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?mpsme |title=2018 CODATA Value: proton-electron mass ratio |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |mtau = {{#switch: {{{2}}} |symbol = ''m''<sub>τ</sub> |val = 3.16754 |un1 = 0.00021 |unc = (21) |exp = -27 |unit = kg |runc = 6.8 |rexp = -5 |ref = <ref name="physconst-mtau">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?mtau |title=2018 CODATA Value: tau mass |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |mW/mZ = {{#switch: {{{2}}} |symbol = ''m''<sub>W</sub>/''m''<sub>Z</sub> |val = 0.88153 |un1 = 0.00017 |unc = (17) |exp = |unit = |runc = 1.9 |rexp = -4 |ref = <ref name="physconst-mW/mZ">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?rmwmz |title=2018 CODATA Value: W to Z mass ratio |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-12-21}}</ref> }} |mu = {{#switch: {{{2}}} |symbol = ''m''<sub>u</sub> |val = 1.66053906660 |un1 = 0.00000000050 |unc = (50) |exp = -27 |unit = kg |runc = 3.0 |rexp = -10 |ref = <ref name="physconst-mu">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?u |title=2018 CODATA Value: atomic mass constant |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |muc2 = {{#switch: {{{2}}} |symbol = ''m''<sub>u</sub>''c''<sup>2</sup> |val = 1.49241808560 |un1 = 0.00000000045 |unc = (45) |exp = -10 |unit = J |runc = 3.0 |rexp = -10 |ref = <ref name="physconst-muc2">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?uj |title=2018 CODATA Value: atomic mass constant energy equivalent |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-07-21}}</ref> }} |muc2_MeV = {{#switch: {{{2}}} |symbol = ''m''<sub>u</sub>''c''<sup>2</sup> |val = 931.49410242 |un1 = 0.0000000028 |unc = (28) |exp = |unit = MeV |runc = 3.0 |rexp = -10 |ref = <ref name="physconst-muc2MeV">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?muc2mev |title=2018 CODATA Value: atomic mass constant energy equivalent in MeV |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-07-21}}</ref> }} |Mu = {{#switch: {{{2}}} |symbol = ''M''<sub>u</sub> |val = 0.99999999965 |un1 = 0.00000000030 |unc = (30) |exp = -3 |unit = kg⋅mol<sup>−1</sup> |runc = 3.0 |rexp = -10 |ref = <ref name="physconst-Mu">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?mu |title=2018 CODATA Value: molar mass constant |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |MC12 = {{#switch: {{{2}}} |symbol = ''M''(<sup>12</sup>C) |val = 11.9999999958 |un1 = 0.0000000036 |unc = (36) |exp = -3 |unit = kg⋅mol<sup>−1</sup> |runc = 3.0 |rexp = -10 |ref = <ref name="physconst-MC12">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?mm12c |title=2018 CODATA Value: molar mass of carbon-12 |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |mu0 = {{#switch: {{{2}}} |symbol = ''μ''<sub>0</sub> |val = 1.25663706212 |un1 = 0.00000000019 |unc = (19) |exp = -6 |unit = N⋅A<sup>−2</sup> |runc = 1.5 |rexp = -10 |ref = <ref name="physconst-mu0">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?mu0 |title=2018 CODATA Value: vacuum magnetic permeability |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |muB = {{#switch: {{{2}}} |symbol = ''μ''<sub>B</sub> |val = 9.2740100783 |un1 = 0.0000000028 |unc = (28) |exp = -24 |unit = J⋅T<sup>−1</sup> |runc = 3.0 |rexp = -10 |ref = <ref name="physconst-muB">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?mub |title=2018 CODATA Value: Bohr magneton |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |mue = {{#switch: {{{2}}} |symbol = ''μ''<sub>e</sub> |val = -9.2847647043 |un1 = 0.0000000028 |unc = (28) |exp = -24 |unit = J⋅T<sup>−1</sup> |runc = 3.0 |rexp = -10 |ref = <ref name="physconst-mue">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?muem |title=2018 CODATA Value: electron magnetic moment |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2022-09-10}}</ref> }} |mue/muB = {{#switch: {{{2}}} |symbol = ''μ''<sub>e</sub>/''μ''<sub>B</sub> |val = -1.00115965218128 |un1 = 0.00000000000018 |unc = (18) |exp = |unit = |runc = 1.7 |rexp = -13 |ref = <ref name="physconst-muemuB">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?muemsmub |title=2018 CODATA Value: electron magnetic moment to Bohr magneton ratio |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2022-09-10}}</ref> }} |mun = {{#switch: {{{2}}} |symbol = ''μ''<sub>n</sub> |val = -9.6623651 |un1 = 0.0000023 |unc = (23) |exp = -27 |unit = J⋅T<sup>−1</sup> |runc = 2.4 |rexp = -7 |ref = <ref name="physconst-mun">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?munn |title=2018 CODATA Value: neutron magnetic moment |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2022-09-17}}</ref> }} |mun/muN = {{#switch: {{{2}}} |symbol = ''μ''<sub>n</sub>/''μ''<sub>N</sub> |val = -1.91304273 |un1 = 0.00000045 |unc = (45) |exp = |unit = |runc = 2.4 |rexp = -7 |ref = <ref name="physconst-munmuN">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?munsmun |title=2018 CODATA Value: neutron magnetic moment to nuclear magneton ratio |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2022-09-17}}</ref> }} |mup = {{#switch: {{{2}}} |symbol = ''μ''<sub>p</sub> |val = 1.41060679736 |un1 = 0.00000000060 |unc = (60) |exp = -26 |unit = J⋅T<sup>−1</sup> |runc = 4.2 |rexp = -10 |ref = <ref name="physconst-mup">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?mup |title=2018 CODATA Value: proton magnetic moment |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2022-09-17}}</ref> }} |mup/muB = {{#switch: {{{2}}} |symbol = ''μ''<sub>p</sub>/''μ''<sub>B</sub> |val = 1.52103220230 |un1 = 0.00000000046 |unc = (46) |exp = -3 |unit = |runc = 3.0 |rexp = -10 |ref = <ref name="physconst-mupmuB">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?mupsmub |title=2018 CODATA Value: proton magnetic moment to Bohr magneton ratio |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2023-06-12}}</ref> }} |mup/muN = {{#switch: {{{2}}} |symbol = ''μ''<sub>p</sub>/''μ''<sub>N</sub> |val = 2.79284734463 |un1 = 0.00000000082 |unc = (82) |exp = |unit = |runc = 2.9 |rexp = -10 |ref = <ref name="physconst-mupmuN">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?mupsmun |title=2018 CODATA Value: proton magnetic moment to nuclear magneton ratio |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2022-09-17}}</ref> }} |muN = {{#switch: {{{2}}} |symbol = ''μ''<sub>N</sub> |val = 5.0507837461 |un1 = 0.0000000015 |unc = (15) |exp = -27 |unit = J⋅T<sup>−1</sup> |runc = 3.1 |rexp = -10 |ref = <ref name="physconst-muN">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?mun |title=2018 CODATA Value: nuclear magneton |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |mumu = {{#switch: {{{2}}} |symbol = ''μ''<sub>μ</sub> |val = -4.49044830 |un1 = 0.00000010 |unc = (18) |exp = -26 |unit = J⋅T<sup>−1</sup> |runc = 2.2 |rexp = -8 |ref = <ref name="physconst-mumu">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?mumum |title=2018 CODATA Value: muon magnetic moment |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2022-09-10}}</ref> }} |NA = {{#switch: {{{2}}} |symbol = ''N''<sub>A</sub> |val = 6.02214076 |un1 = |unc = |exp = 23 |unit = mol<sup>−1</sup> |runc = 0 |rexp = |ref = <ref name="physconst-NA">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?na |title=2018 CODATA Value: Avogadro constant |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |NAh = {{#switch: {{{2}}} |symbol = ''N''<sub>A</sub>''h'' |val = 3.990312712 |un1 = |unc = |end = ... |exp = -10 |unit = J⋅Hz<sup>−1</sup>⋅mol<sup>−1</sup> |runc = 0 |rexp = |ref = <ref name="physconst-NAh">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?nah |title=2018 CODATA Value: molar Planck constant |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |ohm90 = {{#switch: {{{2}}} |symbol = ''Ω''<sub>90</sub> |val = 1.00000001779 |end = ... |un1 = |unc = |exp = |unit = Ω |runc = 0 |rexp = |ref = <ref name="physconst-ohm90">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?ohm90 |title=2018 CODATA Value: conventional value of ohm-90 |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-06-01}}</ref> }} |Phi0 = {{#switch: {{{2}}} |symbol = ''Φ''<sub>0</sub> |val = 2.067833848 |un1 = |unc = |end = ... |exp = -15 |unit = Wb |runc = 0 |rexp = |ref = <ref name="physconst-Phi0">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?flxquhs2e |title=2018 CODATA Value: magnetic flux quantum |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |re = {{#switch: {{{2}}} |symbol = ''r''<sub>e</sub> |val = 2.8179403262 |un1 = 0.0000000013 |unc = (13) |exp = -15 |unit = m |runc = 4.5 |rexp = -10 |ref = <ref name="physconst-re">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?re |title=2018 CODATA Value: classical electron radius |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |rp = {{#switch: {{{2}}} |symbol = ''r''<sub>p</sub> |val = 0.8414 |un1 = 0.0019 |unc = (19) |exp = |unit = fm |runc = 2.2 |rexp = -3 |ref = <ref name="physconst-rp">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?rp |title=2018 CODATA Value: proton rms charge radius |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2022-09-12}}</ref> }} |R = {{#switch: {{{2}}} |symbol = ''R'' |val = 8.314462618 |un1 = |unc = |end = ... |exp = |unit = J⋅mol<sup>−1</sup>⋅K<sup>−1</sup> |runc = 0 |rexp = |ref = <ref name="physconst-R">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?r |title=2018 CODATA Value: molar gas constant |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |Rinf = {{#switch: {{{2}}} |symbol = ''R''<sub>∞</sub> |val = 10973731.568160 |un1 = 0.000021 |unc = (21) |exp = |unit = m<sup>−1</sup> |runc = 1.9 |rexp = -12 |ref = <ref name="physconst-Rinf">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?ryd |title=2018 CODATA Value: Rydberg constant |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |RK = {{#switch: {{{2}}} |symbol = ''R''<sub>K</sub> |val = 25812.80745 |un1 = |unc = |end = ... |exp = |unit = Ω |runc = 0 |rexp = |ref = <ref name="physconst-RK">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?rk |title=2018 CODATA Value: von Klitzing constant |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |RK90 = {{#switch: {{{2}}} |symbol = ''R''<sub>K-90</sub> |val = 25812.807 |un1 = |unc = |exp = |unit = Ω |runc = 0 |rexp = |ref = <ref name="physconst-RK90">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?rk90 |title=2018 CODATA Value: conventional value of von Klitzing constant |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |sigma = {{#switch: {{{2}}} |symbol = ''σ'' |val = 5.670374419 |un1 = |unc = |end = ... |exp = -8 |unit = W⋅m<sup>−2</sup>⋅K<sup>−4</sup> |runc = 0 |rexp = |ref = <ref name="physconst-sigma">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?sigma |title=2018 CODATA Value: Stefan–Boltzmann constant |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |sigmae = {{#switch: {{{2}}} |symbol = ''σ''<sub>e</sub> |val = 6.6524587321 |un1 = 0.0000000060 |unc = (60) |exp = -29 |unit = m<sup>2</sup> |runc = 9.1 |rexp = -10 |ref = <ref name="physconst-sigmae">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?sigmae |title=2018 CODATA Value: Thomson cross section |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |tP = {{#switch: {{{2}}} |symbol = ''t''<sub>P</sub> |val = 5.391247 |un1 = 0.000060 |unc = (60) |exp = -44 |unit = s |runc = 1.1 |rexp = -5 |ref = <ref name="physconst-tP">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?plkt |title=2018 CODATA Value: Planck time |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |TP = {{#switch: {{{2}}} |symbol = ''T''<sub>P</sub> |val = 1.416784 |un1 = 0.000016 |unc = (16) |exp = 32 |unit = K |runc = 1.1 |rexp = -5 |ref = <ref name="physconst-TP">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?plktmp |title=2018 CODATA Value: Planck temperature |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-05-20}}</ref> }} |V90 = {{#switch: {{{2}}} |symbol = ''V''<sub>90</sub> |val = 1.00000010666 |end = ... |un1 = |unc = |exp = |unit = V |runc = 0 |rexp = |ref = <ref name="physconst-V90">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?volt90 |title=2018 CODATA Value: conventional value of volt-90 |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-06-01}}</ref> }} |VmSi = {{#switch: {{{2}}} |symbol = ''V''<sub>m</sub>(Si) |val = 1.205883199 |un1 = 0.000000060 |unc = (60) |exp = -5 |unit = m<sup>3</sup>⋅mol<sup>−1</sup> |runc = 4.9 |rexp = -8 |ref = <ref name="physconst-VmSi">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?mvolsil |title=2018 CODATA Value: molar volume of silicon |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-06-23}}</ref> }} |W90 = {{#switch: {{{2}}} |symbol = ''W''<sub>90</sub> |val = 1.00000019553 |end = ... |un1 = |unc = |exp = |unit = W |runc = 0 |rexp = |ref = <ref name="physconst-W90">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?power90 |title=2018 CODATA Value: conventional value of watt-90 |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-06-01}}</ref> }} |Z0 = {{#switch: {{{2}}} |symbol = ''Z''<sub>0</sub> |val = 376.730313668 |un1 = 0.000000057 |unc = (57) |exp = |unit = Ω |runc = 1.5 |rexp = -10 |ref = <ref name="physconst-Z0">{{cite web |url=https://physics.nist.gov/cgi-bin/cuu/Value?z0 |title=2018 CODATA Value: characteristic impedance of vacuum |date=20 May 2019 |work=The NIST Reference on Constants, Units, and Uncertainty |publisher=[[National Institute of Standards and Technology|NIST]] |access-date=2019-10-31}}</ref> }} }}<noinclude> {{documentation}} </noinclude>
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