742 lines
26 KiB
Groff
742 lines
26 KiB
Groff
.Dd $Mdocdate: May 22 2024 $
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.Dt constants 7
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.Os
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.Sh NAME
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.Nm constants ,
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.Nm codata
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.Nd CODATA Recommended Values of the Fundamental Physical Constants
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.Sh DESCRIPTION
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Numbers are given in programmer's notation:
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.Dq x10⁻³
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is rendered as
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.Dq e-3 .
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Values in parenthesis is the uncertainty.
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.Sh CONSTANTS
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.Ss alpha particle-electron mass ratio
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7294.299 541 71 (0.000 000 17)
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.Ss alpha particle mass
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6.644 657 3450 e-27 (kg) (0.000 000 0021 e-27)
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.Ss alpha particle mass energy equivalent
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5.971 920 1997 e-10 (J) (0.000 000 0019 e-10)
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.Ss alpha particle mass energy equivalent in MeV
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3727.379 4118 (MeV) (0.000 0012)
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.Ss alpha particle mass in u
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4.001 506 179 129 (u) (0.000 000 000 062)
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.Ss alpha particle molar mass
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4.001 506 1833 e-3 (kg mol^-1) (0.000 000 0012 e-3)
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.Ss alpha particle-proton mass ratio
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3.972 599 690 252 (0.000 000 000 070)
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.Ss alpha particle relative atomic mass
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4.001 506 179 129 (0.000 000 000 062)
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.Ss alpha particle rms charge radius
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1.6785 e-15 (m) (0.0021 e-15)
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.Ss Angstrom star
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1.000 014 95 e-10 (m) (0.000 000 90 e-10)
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.Ss atomic mass constant
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1.660 539 068 92 e-27 (kg) (0.000 000 000 52 e-27)
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.Ss atomic mass constant energy equivalent
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1.492 418 087 68 e-10 (J) (0.000 000 000 46 e-10)
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.Ss atomic mass constant energy equivalent in MeV
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931.494 103 72 (MeV) (0.000 000 29)
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.Ss atomic mass unit-electron volt relationship
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9.314 941 0372 e8 (eV) (0.000 000 0029 e8)
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.Ss atomic mass unit-hartree relationship
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3.423 177 6922 e7 (E_h) (0.000 000 0011 e7)
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.Ss atomic mass unit-hertz relationship
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2.252 342 721 85 e23 (Hz) (0.000 000 000 70 e23)
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.Ss atomic mass unit-inverse meter relationship
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7.513 006 6209 e14 (m^-1) (0.000 000 0023 e14)
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.Ss atomic mass unit-joule relationship
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1.492 418 087 68 e-10 (J) (0.000 000 000 46 e-10)
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.Ss atomic mass unit-kelvin relationship
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1.080 954 020 67 e13 (K) (0.000 000 000 34 e13)
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.Ss atomic mass unit-kilogram relationship
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1.660 539 068 92 e-27 (kg) (0.000 000 000 52 e-27)
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.Ss atomic unit of 1st hyperpolarizability
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3.206 361 2996 e-53 (C^3 m^3 J^-2) (0.000 000 0015 e-53)
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.Ss atomic unit of 2nd hyperpolarizability
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6.235 379 9735 e-65 (C^4 m^4 J^-3) (0.000 000 0039 e-65)
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.Ss atomic unit of action
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1.054 571 817... e-34 (J s) (exact)
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.Ss atomic unit of charge
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1.602 176 634 e-19 (C) (exact)
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.Ss atomic unit of charge density
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1.081 202 386 77 e12 (C m^-3) (0.000 000 000 51 e12)
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.Ss atomic unit of current
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6.623 618 237 5082 e-3 (A) (0.000 000 000 0072 e-3)
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.Ss atomic unit of electric dipole mom.
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8.478 353 6198 e-30 (C m) (0.000 000 0013 e-30)
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.Ss atomic unit of electric field
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5.142 206 751 12 e11 (V m^-1) (0.000 000 000 80 e11)
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.Ss atomic unit of electric field gradient
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9.717 362 4424 e21 (V m^-2) (0.000 000 0030 e21)
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.Ss atomic unit of electric polarizability
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1.648 777 272 12 e-41 (C^2 m^2 J^-1) (0.000 000 000 51 e-41)
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.Ss atomic unit of electric potential
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27.211 386 245 981 (V) (0.000 000 000 030)
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.Ss atomic unit of electric quadrupole mom.
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4.486 551 5185 e-40 (C m^2) (0.000 000 0014 e-40)
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.Ss atomic unit of energy
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4.359 744 722 2060 e-18 (J) (0.000 000 000 0048 e-18)
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.Ss atomic unit of force
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8.238 723 5038 e-8 (N) (0.000 000 0013 e-8)
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.Ss atomic unit of length
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5.291 772 105 44 e-11 (m) (0.000 000 000 82 e-11)
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.Ss atomic unit of mag. dipole mom.
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1.854 802 013 15 e-23 (J T^-1) (0.000 000 000 58 e-23)
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.Ss atomic unit of mag. flux density
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2.350 517 570 77 e5 (T) (0.000 000 000 73 e5)
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.Ss atomic unit of magnetizability
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7.891 036 5794 e-29 (J T^-2) (0.000 000 0049 e-29)
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.Ss atomic unit of mass
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9.109 383 7139 e-31 (kg) (0.000 000 0028 e-31)
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.Ss atomic unit of momentum
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1.992 851 915 45 e-24 (kg m s^-1) (0.000 000 000 31 e-24)
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.Ss atomic unit of permittivity
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1.112 650 056 20 e-10 (F m^-1) (0.000 000 000 17 e-10)
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.Ss atomic unit of time
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2.418 884 326 5864 e-17 (s) (0.000 000 000 0026 e-17)
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.Ss atomic unit of velocity
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2.187 691 262 16 e6 (m s^-1) (0.000 000 000 34 e6)
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.Ss Avogadro constant
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6.022 140 76 e23 (mol^-1) (exact)
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.Ss Bohr magneton
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9.274 010 0657 e-24 (J T^-1) (0.000 000 0029 e-24)
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.Ss Bohr magneton in eV/T
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5.788 381 7982 e-5 (eV T^-1) (0.000 000 0018 e-5)
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.Ss Bohr magneton in Hz/T
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1.399 624 491 71 e10 (Hz T^-1) (0.000 000 000 44 e10)
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.Ss Bohr magneton in inverse meter per tesla
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46.686 447 719 (m^-1 T^-1) (0.000 000 015)
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.Ss Bohr magneton in K/T
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0.671 713 814 72 (K T^-1) (0.000 000 000 21)
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.Ss Bohr radius
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5.291 772 105 44 e-11 (m) (0.000 000 000 82 e-11)
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.Ss Boltzmann constant
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1.380 649 e-23 (J K^-1) (exact)
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.Ss Boltzmann constant in eV/K
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8.617 333 262... e-5 (eV K^-1) (exact)
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.Ss Boltzmann constant in Hz/K
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2.083 661 912... e10 (Hz K^-1) (exact)
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.Ss Boltzmann constant in inverse meter per kelvin
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69.503 480 04... (m^-1 K^-1) (exact)
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.Ss characteristic impedance of vacuum
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376.730 313 412 (ohm) (0.000 000 059)
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.Ss classical electron radius
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2.817 940 3205 e-15 (m) (0.000 000 0013 e-15)
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.Ss Compton wavelength
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2.426 310 235 38 e-12 (m) (0.000 000 000 76 e-12)
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.Ss conductance quantum
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7.748 091 729... e-5 (S) (exact)
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.Ss conventional value of ampere-90
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1.000 000 088 87... (A) (exact)
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.Ss conventional value of coulomb-90
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1.000 000 088 87... (C) (exact)
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.Ss conventional value of farad-90
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0.999 999 982 20... (F) (exact)
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.Ss conventional value of henry-90
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1.000 000 017 79... (H) (exact)
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.Ss conventional value of Josephson constant
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483 597.9 e9 (Hz V^-1) (exact)
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.Ss conventional value of ohm-90
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1.000 000 017 79... (ohm) (exact)
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.Ss conventional value of volt-90
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1.000 000 106 66... (V) (exact)
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.Ss conventional value of von Klitzing constant
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25 812.807 (ohm) (exact)
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.Ss conventional value of watt-90
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1.000 000 195 53... (W) (exact)
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.Ss Copper x unit
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1.002 076 97 e-13 (m) (0.000 000 28 e-13)
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.Ss deuteron-electron mag. mom. ratio
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-4.664 345 550 e-4 (0.000 000 012 e-4)
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.Ss deuteron-electron mass ratio
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3670.482 967 655 (0.000 000 063)
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.Ss deuteron g factor
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0.857 438 2335 (0.000 000 0022)
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.Ss deuteron mag. mom.
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4.330 735 087 e-27 (J T^-1) (0.000 000 011 e-27)
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.Ss deuteron mag. mom. to Bohr magneton ratio
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4.669 754 568 e-4 (0.000 000 012 e-4)
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.Ss deuteron mag. mom. to nuclear magneton ratio
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0.857 438 2335 (0.000 000 0022)
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.Ss deuteron mass
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3.343 583 7768 e-27 (kg) (0.000 000 0010 e-27)
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.Ss deuteron mass energy equivalent
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3.005 063 234 91 e-10 (J) (0.000 000 000 94 e-10)
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.Ss deuteron mass energy equivalent in MeV
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1875.612 945 00 (MeV) (0.000 000 58)
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.Ss deuteron mass in u
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2.013 553 212 544 (u) (0.000 000 000 015)
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.Ss deuteron molar mass
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2.013 553 214 66 e-3 (kg mol^-1) (0.000 000 000 63 e-3)
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.Ss deuteron-neutron mag. mom. ratio
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-0.448 206 52 (0.000 000 11)
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.Ss deuteron-proton mag. mom. ratio
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0.307 012 209 30 (0.000 000 000 79)
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.Ss deuteron-proton mass ratio
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1.999 007 501 2699 (0.000 000 000 0084)
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.Ss deuteron relative atomic mass
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2.013 553 212 544 (0.000 000 000 015)
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.Ss deuteron rms charge radius
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2.127 78 e-15 (m) (0.000 27 e-15)
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.Ss electron charge to mass quotient
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-1.758 820 008 38 e11 (C kg^-1) (0.000 000 000 55 e11)
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.Ss electron-deuteron mag. mom. ratio
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-2143.923 4921 (0.000 0056)
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.Ss electron-deuteron mass ratio
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2.724 437 107 629 e-4 (0.000 000 000 047 e-4)
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.Ss electron g factor
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-2.002 319 304 360 92 (0.000 000 000 000 36)
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.Ss electron gyromag. ratio
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1.760 859 627 84 e11 (s^-1 T^-1) (0.000 000 000 55 e11)
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.Ss electron gyromag. ratio in MHz/T
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28 024.951 3861 (MHz T^-1) (0.000 0087)
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.Ss electron-helion mass ratio
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1.819 543 074 649 e-4 (0.000 000 000 053 e-4)
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.Ss electron mag. mom.
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-9.284 764 6917 e-24 (J T^-1) (0.000 000 0029 e-24)
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.Ss electron mag. mom. anomaly
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1.159 652 180 46 e-3 (0.000 000 000 18 e-3)
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.Ss electron mag. mom. to Bohr magneton ratio
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-1.001 159 652 180 46 (0.000 000 000 000 18)
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.Ss electron mag. mom. to nuclear magneton ratio
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-1838.281 971 877 (0.000 000 032)
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.Ss electron mass
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9.109 383 7139 e-31 (kg) (0.000 000 0028 e-31)
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.Ss electron mass energy equivalent
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8.187 105 7880 e-14 (J) (0.000 000 0026 e-14)
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.Ss electron mass energy equivalent in MeV
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0.510 998 950 69 (MeV) (0.000 000 000 16)
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.Ss electron mass in u
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5.485 799 090 441 e-4 (u) (0.000 000 000 097 e-4)
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.Ss electron molar mass
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5.485 799 0962 e-7 (kg mol^-1) (0.000 000 0017 e-7)
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.Ss electron-muon mag. mom. ratio
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206.766 9881 (0.000 0046)
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.Ss electron-muon mass ratio
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4.836 331 70 e-3 (0.000 000 11 e-3)
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.Ss electron-neutron mag. mom. ratio
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960.920 48 (0.000 23)
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.Ss electron-neutron mass ratio
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5.438 673 4416 e-4 (0.000 000 0022 e-4)
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.Ss electron-proton mag. mom. ratio
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-658.210 687 89 (0.000 000 19)
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.Ss electron-proton mass ratio
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5.446 170 214 889 e-4 (0.000 000 000 094 e-4)
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.Ss electron relative atomic mass
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5.485 799 090 441 e-4 (0.000 000 000 097 e-4)
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.Ss electron-tau mass ratio
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2.875 85 e-4 (0.000 19 e-4)
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.Ss electron to alpha particle mass ratio
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1.370 933 554 733 e-4 (0.000 000 000 032 e-4)
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.Ss electron to shielded helion mag. mom. ratio
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864.058 239 86 (0.000 000 70)
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.Ss electron to shielded proton mag. mom. ratio
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-658.227 5856 (0.000 0027)
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.Ss electron-triton mass ratio
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1.819 200 062 327 e-4 (0.000 000 000 068 e-4)
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.Ss electron volt
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1.602 176 634 e-19 (J) (exact)
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.Ss electron volt-atomic mass unit relationship
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1.073 544 100 83 e-9 (u) (0.000 000 000 33 e-9)
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.Ss electron volt-hartree relationship
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3.674 932 217 5665 e-2 (E_h) (0.000 000 000 0040 e-2)
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.Ss electron volt-hertz relationship
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2.417 989 242... e14 (Hz) (exact)
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.Ss electron volt-inverse meter relationship
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8.065 543 937... e5 (m^-1) (exact)
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.Ss electron volt-joule relationship
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1.602 176 634 e-19 (J) (exact)
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.Ss electron volt-kelvin relationship
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1.160 451 812... e4 (K) (exact)
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.Ss electron volt-kilogram relationship
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1.782 661 921... e-36 (kg) (exact)
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.Ss elementary charge
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1.602 176 634 e-19 (C) (exact)
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.Ss elementary charge over h-bar
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1.519 267 447... e15 (A J^-1) (exact)
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.Ss Faraday constant
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96 485.332 12... (C mol^-1) (exact)
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.Ss Fermi coupling constant
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1.166 3787 e-5 (GeV^-2) (0.000 0006 e-5)
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.Ss fine-structure constant
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7.297 352 5643 e-3 (0.000 000 0011 e-3)
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.Ss first radiation constant
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3.741 771 852... e-16 (W m^2) (exact)
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.Ss first radiation constant for spectral radiance
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1.191 042 972... e-16 (W m^2 sr^-1) (exact)
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.Ss hartree-atomic mass unit relationship
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2.921 262 317 97 e-8 (u) (0.000 000 000 91 e-8)
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.Ss hartree-electron volt relationship
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27.211 386 245 981 (eV) (0.000 000 000 030)
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.Ss Hartree energy
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4.359 744 722 2060 e-18 (J) (0.000 000 000 0048 e-18)
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.Ss Hartree energy in eV
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27.211 386 245 981 (eV) (0.000 000 000 030)
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.Ss hartree-hertz relationship
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6.579 683 920 4999 e15 (Hz) (0.000 000 000 0072 e15)
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.Ss hartree-inverse meter relationship
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2.194 746 313 6314 e7 (m^-1) (0.000 000 000 0024 e7)
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.Ss hartree-joule relationship
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4.359 744 722 2060 e-18 (J) (0.000 000 000 0048 e-18)
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.Ss hartree-kelvin relationship
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3.157 750 248 0398 e5 (K) (0.000 000 000 0034 e5)
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.Ss hartree-kilogram relationship
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4.850 870 209 5419 e-35 (kg) (0.000 000 000 0053 e-35)
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.Ss helion-electron mass ratio
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5495.885 279 84 (0.000 000 16)
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.Ss helion g factor
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-4.255 250 6995 (0.000 000 0034)
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.Ss helion mag. mom.
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-1.074 617 551 98 e-26 (J T^-1) (0.000 000 000 93 e-26)
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.Ss helion mag. mom. to Bohr magneton ratio
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-1.158 740 980 83 e-3 (0.000 000 000 94 e-3)
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.Ss helion mag. mom. to nuclear magneton ratio
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-2.127 625 3498 (0.000 000 0017)
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.Ss helion mass
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5.006 412 7862 e-27 (kg) (0.000 000 0016 e-27)
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.Ss helion mass energy equivalent
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4.499 539 4185 e-10 (J) (0.000 000 0014 e-10)
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.Ss helion mass energy equivalent in MeV
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2808.391 611 12 (MeV) (0.000 000 88)
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.Ss helion mass in u
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3.014 932 246 932 (u) (0.000 000 000 074)
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.Ss helion molar mass
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3.014 932 250 10 e-3 (kg mol^-1) (0.000 000 000 94 e-3)
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.Ss helion-proton mass ratio
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2.993 152 671 552 (0.000 000 000 070)
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.Ss helion relative atomic mass
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3.014 932 246 932 (0.000 000 000 074)
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.Ss helion shielding shift
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5.996 7029 e-5 (0.000 0023 e-5)
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.Ss hertz-atomic mass unit relationship
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4.439 821 6590 e-24 (u) (0.000 000 0014 e-24)
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.Ss hertz-electron volt relationship
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4.135 667 696... e-15 (eV) (exact)
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.Ss hertz-hartree relationship
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1.519 829 846 0574 e-16 (E_h) (0.000 000 000 0017 e-16)
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.Ss hertz-inverse meter relationship
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3.335 640 951... e-9 (m^-1) (exact)
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.Ss hertz-joule relationship
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6.626 070 15 e-34 (J) (exact)
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.Ss hertz-kelvin relationship
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4.799 243 073... e-11 (K) (exact)
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.Ss hertz-kilogram relationship
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7.372 497 323... e-51 (kg) (exact)
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.Ss hyperfine transition frequency of Cs-133
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9 192 631 770 (Hz) (exact)
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.Ss inverse fine-structure constant
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137.035 999 177 (0.000 000 021)
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.Ss inverse meter-atomic mass unit relationship
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1.331 025 048 24 e-15 (u) (0.000 000 000 41 e-15)
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.Ss inverse meter-electron volt relationship
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1.239 841 984... e-6 (eV) (exact)
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.Ss inverse meter-hartree relationship
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4.556 335 252 9132 e-8 (E_h) (0.000 000 000 0050 e-8)
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.Ss inverse meter-hertz relationship
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299 792 458 (Hz) (exact)
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.Ss inverse meter-joule relationship
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1.986 445 857... e-25 (J) (exact)
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.Ss inverse meter-kelvin relationship
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1.438 776 877... e-2 (K) (exact)
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.Ss inverse meter-kilogram relationship
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2.210 219 094... e-42 (kg) (exact)
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.Ss inverse of conductance quantum
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12 906.403 72... (ohm) (exact)
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.Ss Josephson constant
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483 597.848 4... e9 (Hz V^-1) (exact)
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.Ss joule-atomic mass unit relationship
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6.700 535 2471 e9 (u) (0.000 000 0021 e9)
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.Ss joule-electron volt relationship
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6.241 509 074... e18 (eV) (exact)
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.Ss joule-hartree relationship
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2.293 712 278 3969 e17 (E_h) (0.000 000 000 0025 e17)
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.Ss joule-hertz relationship
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1.509 190 179... e33 (Hz) (exact)
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.Ss joule-inverse meter relationship
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5.034 116 567... e24 (m^-1) (exact)
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.Ss joule-kelvin relationship
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7.242 970 516... e22 (K) (exact)
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.Ss joule-kilogram relationship
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1.112 650 056... e-17 (kg) (exact)
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.Ss kelvin-atomic mass unit relationship
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9.251 087 2884 e-14 (u) (0.000 000 0029 e-14)
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.Ss kelvin-electron volt relationship
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8.617 333 262... e-5 (eV) (exact)
|
|
.Ss kelvin-hartree relationship
|
|
3.166 811 563 4564 e-6 (E_h) (0.000 000 000 0035 e-6)
|
|
.Ss kelvin-hertz relationship
|
|
2.083 661 912... e10 (Hz) (exact)
|
|
.Ss kelvin-inverse meter relationship
|
|
69.503 480 04... (m^-1) (exact)
|
|
.Ss kelvin-joule relationship
|
|
1.380 649 e-23 (J) (exact)
|
|
.Ss kelvin-kilogram relationship
|
|
1.536 179 187... e-40 (kg) (exact)
|
|
.Ss kilogram-atomic mass unit relationship
|
|
6.022 140 7537 e26 (u) (0.000 000 0019 e26)
|
|
.Ss kilogram-electron volt relationship
|
|
5.609 588 603... e35 (eV) (exact)
|
|
.Ss kilogram-hartree relationship
|
|
2.061 485 788 7415 e34 (E_h) (0.000 000 000 0022 e34)
|
|
.Ss kilogram-hertz relationship
|
|
1.356 392 489... e50 (Hz) (exact)
|
|
.Ss kilogram-inverse meter relationship
|
|
4.524 438 335... e41 (m^-1) (exact)
|
|
.Ss kilogram-joule relationship
|
|
8.987 551 787... e16 (J) (exact)
|
|
.Ss kilogram-kelvin relationship
|
|
6.509 657 260... e39 (K) (exact)
|
|
.Ss lattice parameter of silicon
|
|
5.431 020 511 e-10 (m) (0.000 000 089 e-10)
|
|
.Ss lattice spacing of ideal Si (220)
|
|
1.920 155 716 e-10 (m) (0.000 000 032 e-10)
|
|
.Ss Loschmidt constant (273.15 K, 100 kPa)
|
|
2.651 645 804... e25 (m^-3) (exact)
|
|
.Ss Loschmidt constant (273.15 K, 101.325 kPa)
|
|
2.686 780 111... e25 (m^-3) (exact)
|
|
.Ss luminous efficacy
|
|
683 (lm W^-1) (exact)
|
|
.Ss mag. flux quantum
|
|
2.067 833 848... e-15 (Wb) (exact)
|
|
.Ss molar gas constant
|
|
8.314 462 618... (J mol^-1 K^-1) (exact)
|
|
.Ss molar mass constant
|
|
1.000 000 001 05 e-3 (kg mol^-1) (0.000 000 000 31 e-3)
|
|
.Ss molar mass of carbon-12
|
|
12.000 000 0126 e-3 (kg mol^-1) (0.000 000 0037 e-3)
|
|
.Ss molar Planck constant
|
|
3.990 312 712... e-10 (J Hz^-1 mol^-1) (exact)
|
|
.Ss molar volume of ideal gas (273.15 K, 100 kPa)
|
|
22.710 954 64... e-3 (m^3 mol^-1) (exact)
|
|
.Ss molar volume of ideal gas (273.15 K, 101.325 kPa)
|
|
22.413 969 54... e-3 (m^3 mol^-1) (exact)
|
|
.Ss molar volume of silicon
|
|
1.205 883 199 e-5 (m^3 mol^-1) (0.000 000 060 e-5)
|
|
.Ss Molybdenum x unit
|
|
1.002 099 52 e-13 (m) (0.000 000 53 e-13)
|
|
.Ss muon Compton wavelength
|
|
1.173 444 110 e-14 (m) (0.000 000 026 e-14)
|
|
.Ss muon-electron mass ratio
|
|
206.768 2827 (0.000 0046)
|
|
.Ss muon g factor
|
|
-2.002 331 841 23 (0.000 000 000 82)
|
|
.Ss muon mag. mom.
|
|
-4.490 448 30 e-26 (J T^-1) (0.000 000 10 e-26)
|
|
.Ss muon mag. mom. anomaly
|
|
1.165 920 62 e-3 (0.000 000 41 e-3)
|
|
.Ss muon mag. mom. to Bohr magneton ratio
|
|
-4.841 970 48 e-3 (0.000 000 11 e-3)
|
|
.Ss muon mag. mom. to nuclear magneton ratio
|
|
-8.890 597 04 (0.000 000 20)
|
|
.Ss muon mass
|
|
1.883 531 627 e-28 (kg) (0.000 000 042 e-28)
|
|
.Ss muon mass energy equivalent
|
|
1.692 833 804 e-11 (J) (0.000 000 038 e-11)
|
|
.Ss muon mass energy equivalent in MeV
|
|
105.658 3755 (MeV) (0.000 0023)
|
|
.Ss muon mass in u
|
|
0.113 428 9257 (u) (0.000 000 0025)
|
|
.Ss muon molar mass
|
|
1.134 289 258 e-4 (kg mol^-1) (0.000 000 025 e-4)
|
|
.Ss muon-neutron mass ratio
|
|
0.112 454 5168 (0.000 000 0025)
|
|
.Ss muon-proton mag. mom. ratio
|
|
-3.183 345 146 (0.000 000 071)
|
|
.Ss muon-proton mass ratio
|
|
0.112 609 5262 (0.000 000 0025)
|
|
.Ss muon-tau mass ratio
|
|
5.946 35 e-2 (0.000 40 e-2)
|
|
.Ss natural unit of action
|
|
1.054 571 817... e-34 (J s) (exact)
|
|
.Ss natural unit of action in eV s
|
|
6.582 119 569... e-16 (eV s) (exact)
|
|
.Ss natural unit of energy
|
|
8.187 105 7880 e-14 (J) (0.000 000 0026 e-14)
|
|
.Ss natural unit of energy in MeV
|
|
0.510 998 950 69 (MeV) (0.000 000 000 16)
|
|
.Ss natural unit of length
|
|
3.861 592 6744 e-13 (m) (0.000 000 0012 e-13)
|
|
.Ss natural unit of mass
|
|
9.109 383 7139 e-31 (kg) (0.000 000 0028 e-31)
|
|
.Ss natural unit of momentum
|
|
2.730 924 534 46 e-22 (kg m s^-1) (0.000 000 000 85 e-22)
|
|
.Ss natural unit of momentum in MeV/c
|
|
0.510 998 950 69 (MeV/c) (0.000 000 000 16)
|
|
.Ss natural unit of time
|
|
1.288 088 666 44 e-21 (s) (0.000 000 000 40 e-21)
|
|
.Ss natural unit of velocity
|
|
299 792 458 (m s^-1) (exact)
|
|
.Ss neutron Compton wavelength
|
|
1.319 590 903 82 e-15 (m) (0.000 000 000 67 e-15)
|
|
.Ss neutron-electron mag. mom. ratio
|
|
1.040 668 84 e-3 (0.000 000 24 e-3)
|
|
.Ss neutron-electron mass ratio
|
|
1838.683 662 00 (0.000 000 74)
|
|
.Ss neutron g factor
|
|
-3.826 085 52 (0.000 000 90)
|
|
.Ss neutron gyromag. ratio
|
|
1.832 471 74 e8 (s^-1 T^-1) (0.000 000 43 e8)
|
|
.Ss neutron gyromag. ratio in MHz/T
|
|
29.164 6935 (MHz T^-1) (0.000 0069)
|
|
.Ss neutron mag. mom.
|
|
-9.662 3653 e-27 (J T^-1) (0.000 0023 e-27)
|
|
.Ss neutron mag. mom. to Bohr magneton ratio
|
|
-1.041 875 65 e-3 (0.000 000 25 e-3)
|
|
.Ss neutron mag. mom. to nuclear magneton ratio
|
|
-1.913 042 76 (0.000 000 45)
|
|
.Ss neutron mass
|
|
1.674 927 500 56 e-27 (kg) (0.000 000 000 85 e-27)
|
|
.Ss neutron mass energy equivalent
|
|
1.505 349 765 14 e-10 (J) (0.000 000 000 76 e-10)
|
|
.Ss neutron mass energy equivalent in MeV
|
|
939.565 421 94 (MeV) (0.000 000 48)
|
|
.Ss neutron mass in u
|
|
1.008 664 916 06 (u) (0.000 000 000 40)
|
|
.Ss neutron molar mass
|
|
1.008 664 917 12 e-3 (kg mol^-1) (0.000 000 000 51 e-3)
|
|
.Ss neutron-muon mass ratio
|
|
8.892 484 08 (0.000 000 20)
|
|
.Ss neutron-proton mag. mom. ratio
|
|
-0.684 979 35 (0.000 000 16)
|
|
.Ss neutron-proton mass difference
|
|
2.305 574 61 e-30 (kg) (0.000 000 67 e-30)
|
|
.Ss neutron-proton mass difference energy equivalent
|
|
2.072 147 12 e-13 (J) (0.000 000 60 e-13)
|
|
.Ss neutron-proton mass difference energy equivalent in MeV
|
|
1.293 332 51 (MeV) (0.000 000 38)
|
|
.Ss neutron-proton mass difference in u
|
|
1.388 449 48 e-3 (u) (0.000 000 40 e-3)
|
|
.Ss neutron-proton mass ratio
|
|
1.001 378 419 46 (0.000 000 000 40)
|
|
.Ss neutron relative atomic mass
|
|
1.008 664 916 06 (0.000 000 000 40)
|
|
.Ss neutron-tau mass ratio
|
|
0.528 779 (0.000 036)
|
|
.Ss neutron to shielded proton mag. mom. ratio
|
|
-0.684 996 94 (0.000 000 16)
|
|
.Ss Newtonian constant of gravitation
|
|
6.674 30 e-11 (m^3 kg^-1 s^-2) (0.000 15 e-11)
|
|
.Ss Newtonian constant of gravitation over h-bar c
|
|
6.708 83 e-39 ((GeV/c^2)^-2) (0.000 15 e-39)
|
|
.Ss nuclear magneton
|
|
5.050 783 7393 e-27 (J T^-1) (0.000 000 0016 e-27)
|
|
.Ss nuclear magneton in eV/T
|
|
3.152 451 254 17 e-8 (eV T^-1) (0.000 000 000 98 e-8)
|
|
.Ss nuclear magneton in inverse meter per tesla
|
|
2.542 623 410 09 e-2 (m^-1 T^-1) (0.000 000 000 79 e-2)
|
|
.Ss nuclear magneton in K/T
|
|
3.658 267 7706 e-4 (K T^-1) (0.000 000 0011 e-4)
|
|
.Ss nuclear magneton in MHz/T
|
|
7.622 593 2188 (MHz T^-1) (0.000 000 0024)
|
|
.Ss Planck constant
|
|
6.626 070 15 e-34 (J Hz^-1) (exact)
|
|
.Ss Planck constant in eV/Hz
|
|
4.135 667 696... e-15 (eV Hz^-1) (exact)
|
|
.Ss Planck length
|
|
1.616 255 e-35 (m) (0.000 018 e-35)
|
|
.Ss Planck mass
|
|
2.176 434 e-8 (kg) (0.000 024 e-8)
|
|
.Ss Planck mass energy equivalent in GeV
|
|
1.220 890 e19 (GeV) (0.000 014 e19)
|
|
.Ss Planck temperature
|
|
1.416 784 e32 (K) (0.000 016 e32)
|
|
.Ss Planck time
|
|
5.391 247 e-44 (s) (0.000 060 e-44)
|
|
.Ss proton charge to mass quotient
|
|
9.578 833 1430 e7 (C kg^-1) (0.000 000 0030 e7)
|
|
.Ss proton Compton wavelength
|
|
1.321 409 853 60 e-15 (m) (0.000 000 000 41 e-15)
|
|
.Ss proton-electron mass ratio
|
|
1836.152 673 426 (0.000 000 032)
|
|
.Ss proton g factor
|
|
5.585 694 6893 (0.000 000 0016)
|
|
.Ss proton gyromag. ratio
|
|
2.675 221 8708 e8 (s^-1 T^-1) (0.000 000 0011 e8)
|
|
.Ss proton gyromag. ratio in MHz/T
|
|
42.577 478 461 (MHz T^-1) (0.000 000 018)
|
|
.Ss proton mag. mom.
|
|
1.410 606 795 45 e-26 (J T^-1) (0.000 000 000 60 e-26)
|
|
.Ss proton mag. mom. to Bohr magneton ratio
|
|
1.521 032 202 30 e-3 (0.000 000 000 45 e-3)
|
|
.Ss proton mag. mom. to nuclear magneton ratio
|
|
2.792 847 344 63 (0.000 000 000 82)
|
|
.Ss proton mag. shielding correction
|
|
2.567 15 e-5 (0.000 41 e-5)
|
|
.Ss proton mass
|
|
1.672 621 925 95 e-27 (kg) (0.000 000 000 52 e-27)
|
|
.Ss proton mass energy equivalent
|
|
1.503 277 618 02 e-10 (J) (0.000 000 000 47 e-10)
|
|
.Ss proton mass energy equivalent in MeV
|
|
938.272 089 43 (MeV) (0.000 000 29)
|
|
.Ss proton mass in u
|
|
1.007 276 466 5789 (u) (0.000 000 000 0083)
|
|
.Ss proton molar mass
|
|
1.007 276 467 64 e-3 (kg mol^-1) (0.000 000 000 31 e-3)
|
|
.Ss proton-muon mass ratio
|
|
8.880 243 38 (0.000 000 20)
|
|
.Ss proton-neutron mag. mom. ratio
|
|
-1.459 898 02 (0.000 000 34)
|
|
.Ss proton-neutron mass ratio
|
|
0.998 623 477 97 (0.000 000 000 40)
|
|
.Ss proton relative atomic mass
|
|
1.007 276 466 5789 (0.000 000 000 0083)
|
|
.Ss proton rms charge radius
|
|
8.4075 e-16 (m) (0.0064 e-16)
|
|
.Ss proton-tau mass ratio
|
|
0.528 051 (0.000 036)
|
|
.Ss quantum of circulation
|
|
3.636 947 5467 e-4 (m^2 s^-1) (0.000 000 0011 e-4)
|
|
.Ss quantum of circulation times 2
|
|
7.273 895 0934 e-4 (m^2 s^-1) (0.000 000 0023 e-4)
|
|
.Ss reduced Compton wavelength
|
|
3.861 592 6744 e-13 (m) (0.000 000 0012 e-13)
|
|
.Ss reduced muon Compton wavelength
|
|
1.867 594 306 e-15 (m) (0.000 000 042 e-15)
|
|
.Ss reduced neutron Compton wavelength
|
|
2.100 194 1520 e-16 (m) (0.000 000 0011 e-16)
|
|
.Ss reduced Planck constant
|
|
1.054 571 817... e-34 (J s) (exact)
|
|
.Ss reduced Planck constant in eV s
|
|
6.582 119 569... e-16 (eV s) (exact)
|
|
.Ss reduced Planck constant times c in MeV fm
|
|
197.326 980 4... (MeV fm) (exact)
|
|
.Ss reduced proton Compton wavelength
|
|
2.103 089 100 51 e-16 (m) (0.000 000 000 66 e-16)
|
|
.Ss reduced tau Compton wavelength
|
|
1.110 538 e-16 (m) (0.000 075 e-16)
|
|
.Ss Rydberg constant
|
|
10 973 731.568 157 (m^-1) (0.000 012)
|
|
.Ss Rydberg constant times c in Hz
|
|
3.289 841 960 2500 e15 (Hz) (0.000 000 000 0036 e15)
|
|
.Ss Rydberg constant times hc in eV
|
|
13.605 693 122 990 (eV) (0.000 000 000 015)
|
|
.Ss Rydberg constant times hc in J
|
|
2.179 872 361 1030 e-18 (J) (0.000 000 000 0024 e-18)
|
|
.Ss Sackur-Tetrode constant (1 K, 100 kPa)
|
|
-1.151 707 534 96 (0.000 000 000 47)
|
|
.Ss Sackur-Tetrode constant (1 K, 101.325 kPa)
|
|
-1.164 870 521 49 (0.000 000 000 47)
|
|
.Ss second radiation constant
|
|
1.438 776 877... e-2 (m K) (exact)
|
|
.Ss shielded helion gyromag. ratio
|
|
2.037 894 6078 e8 (s^-1 T^-1) (0.000 000 0018 e8)
|
|
.Ss shielded helion gyromag. ratio in MHz/T
|
|
32.434 100 033 (MHz T^-1) (0.000 000 028)
|
|
.Ss shielded helion mag. mom.
|
|
-1.074 553 110 35 e-26 (J T^-1) (0.000 000 000 93 e-26)
|
|
.Ss shielded helion mag. mom. to Bohr magneton ratio
|
|
-1.158 671 494 57 e-3 (0.000 000 000 94 e-3)
|
|
.Ss shielded helion mag. mom. to nuclear magneton ratio
|
|
-2.127 497 7624 (0.000 000 0017)
|
|
.Ss shielded helion to proton mag. mom. ratio
|
|
-0.761 766 577 21 (0.000 000 000 66)
|
|
.Ss shielded helion to shielded proton mag. mom. ratio
|
|
-0.761 786 1334 (0.000 000 0031)
|
|
.Ss shielded proton gyromag. ratio
|
|
2.675 153 194 e8 (s^-1 T^-1) (0.000 000 011 e8)
|
|
.Ss shielded proton gyromag. ratio in MHz/T
|
|
42.576 385 43 (MHz T^-1) (0.000 000 17)
|
|
.Ss shielded proton mag. mom.
|
|
1.410 570 5830 e-26 (J T^-1) (0.000 000 0058 e-26)
|
|
.Ss shielded proton mag. mom. to Bohr magneton ratio
|
|
1.520 993 1551 e-3 (0.000 000 0062 e-3)
|
|
.Ss shielded proton mag. mom. to nuclear magneton ratio
|
|
2.792 775 648 (0.000 000 011)
|
|
.Ss shielding difference of d and p in HD
|
|
1.987 70 e-8 (0.000 10 e-8)
|
|
.Ss shielding difference of t and p in HT
|
|
2.394 50 e-8 (0.000 20 e-8)
|
|
.Ss speed of light in vacuum
|
|
299 792 458 (m s^-1) (exact)
|
|
.Ss standard acceleration of gravity
|
|
9.806 65 (m s^-2) (exact)
|
|
.Ss standard atmosphere
|
|
101 325 (Pa) (exact)
|
|
.Ss standard-state pressure
|
|
100 000 (Pa) (exact)
|
|
.Ss Stefan-Boltzmann constant
|
|
5.670 374 419... e-8 (W m^-2 K^-4) (exact)
|
|
.Ss tau Compton wavelength
|
|
6.977 71 e-16 (m) (0.000 47 e-16)
|
|
.Ss tau-electron mass ratio
|
|
3477.23 (0.23)
|
|
.Ss tau energy equivalent
|
|
1776.86 (MeV) (0.12)
|
|
.Ss tau mass
|
|
3.167 54 e-27 (kg) (0.000 21 e-27)
|
|
.Ss tau mass energy equivalent
|
|
2.846 84 e-10 (J) (0.000 19 e-10)
|
|
.Ss tau mass in u
|
|
1.907 54 (u) (0.000 13)
|
|
.Ss tau molar mass
|
|
1.907 54 e-3 (kg mol^-1) (0.000 13 e-3)
|
|
.Ss tau-muon mass ratio
|
|
16.8170 (0.0011)
|
|
.Ss tau-neutron mass ratio
|
|
1.891 15 (0.000 13)
|
|
.Ss tau-proton mass ratio
|
|
1.893 76 (0.000 13)
|
|
.Ss Thomson cross section
|
|
6.652 458 7051 e-29 (m^2) (0.000 000 0062 e-29)
|
|
.Ss triton-electron mass ratio
|
|
5496.921 535 51 (0.000 000 21)
|
|
.Ss triton g factor
|
|
5.957 924 930 (0.000 000 012)
|
|
.Ss triton mag. mom.
|
|
1.504 609 5178 e-26 (J T^-1) (0.000 000 0030 e-26)
|
|
.Ss triton mag. mom. to Bohr magneton ratio
|
|
1.622 393 6648 e-3 (0.000 000 0032 e-3)
|
|
.Ss triton mag. mom. to nuclear magneton ratio
|
|
2.978 962 4650 (0.000 000 0059)
|
|
.Ss triton mass
|
|
5.007 356 7512 e-27 (kg) (0.000 000 0016 e-27)
|
|
.Ss triton mass energy equivalent
|
|
4.500 387 8119 e-10 (J) (0.000 000 0014 e-10)
|
|
.Ss triton mass energy equivalent in MeV
|
|
2808.921 136 68 (MeV) (0.000 000 88)
|
|
.Ss triton mass in u
|
|
3.015 500 715 97 (u) (0.000 000 000 10)
|
|
.Ss triton molar mass
|
|
3.015 500 719 13 e-3 (kg mol^-1) (0.000 000 000 94 e-3)
|
|
.Ss triton-proton mass ratio
|
|
2.993 717 034 03 (0.000 000 000 10)
|
|
.Ss triton relative atomic mass
|
|
3.015 500 715 97 (0.000 000 000 10)
|
|
.Ss triton to proton mag. mom. ratio
|
|
1.066 639 9189 (0.000 000 0021)
|
|
.Ss unified atomic mass unit
|
|
1.660 539 068 92 e-27 (kg) (0.000 000 000 52 e-27)
|
|
.Ss vacuum electric permittivity
|
|
8.854 187 8188 e-12 (F m^-1) (0.000 000 0014 e-12)
|
|
.Ss vacuum mag. permeability
|
|
1.256 637 061 27 e-6 (N A^-2) (0.000 000 000 20 e-6)
|
|
.Ss von Klitzing constant
|
|
25 812.807 45... (ohm) (exact)
|
|
.Ss weak mixing angle
|
|
0.223 05 (0.000 23)
|
|
.Ss Wien frequency displacement law constant
|
|
5.878 925 757... e10 (Hz K^-1) (exact)
|
|
.Ss Wien wavelength displacement law constant
|
|
2.897 771 955... e-3 (m K) (exact)
|
|
.Ss W to Z mass ratio
|
|
0.881 45 (0.000 13)
|
|
.Sh INFO
|
|
Manual page version 2024.01. Public domain.
|
|
|
|
Generated from
|
|
.Lk https://physics.nist.gov/cuu/Constants/Table/allascii.txt
|
|
using the following script for the table:
|
|
.Bd -literal -offset indent -compact
|
|
awk -F ' +' 'NR >= 12 {
|
|
if ($4 != "")
|
|
$4 = " (" $4 ")";
|
|
if ($1 == "")
|
|
next;
|
|
if ($3 !~ /^\(/)
|
|
$3 = "(" $3 ")"
|
|
printf(".Ss %s\n%s%s %s\n", $1, $2, $4, $3)
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} ' allascii.txt
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.Ed
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