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26.3: Appendix B. Fundamental Constants†

  • Page ID
    192031
  • \[ \begin{array}{l l} \textbf{Quantity} & \textbf{Symbol} & \textbf{Value} & \textbf{Unit} \\ \text{speed of light in a vacuum} & \text{c} & 299 792 458 & \text{m s}^{–1} \\ \text{Planck constant} & \text{h} & 6.626 068 76 \times 10^{–34} & \text{J s} \\ \text{elementary charge} & \text{e} & 1.602 176 462 \times 10^{–19} & \text{C} \\ \text{electron mass} & \text{m}_{\text{e}} & 9.109 381 88 \times 10^{–31} & \text{kg} \\ \text{proton mass} & \text{m}_{\text{p}} & 1.672 621 58 \times 10^{–27} & \text{kg} \\ \text{Avogadro constant} & \overline{ \text{N}} & 6.022 141 99 \times 10^{23} & \text{mol}^{–1} \\ \text{Faraday constant} & \text{F} & 96 485.341 5 & \text{C mol}^{–1} \\ \text{molar gas constant} & \text{R} & 8.314 472 & \text{J mol}^{–1} ~ \text{K}^{–1} \\ ~ & \text{R} & 8.314 472 \times 10^{–2} & \text{bar L mol}^{–1} ~ \text{K}^{–1} \\ ~ & \text{R} & 8.205 745 \times 10^{–2} & \text{atm L mol}^{–1} ~ \text{K}^{–1} \\ ~ & \text{R} & 1.987 206 & \text{cal mol}^{–1} ~ \text{K}^{–1} \\ \text{Boltzmann constant} & \text{k} & 1.380 650 3 \times 10^{–23} & \text{J K}^{–1} \\ \begin{array}{l l} \text{standard acceleration of free} \\ \text{fall at the earth’s surface†} \end{array} & \text{g} & 9.806 650 & \text{m s}^{–2} \end{array}\]

    Source: 1998 CODATA recommended values. Peter J. Mohr and Barry N. Taylor, Reviews of Modern Physics, Vol. 72, No. 2, pp. 351-495, 2000. See www.physics.nist.gov/constants.

    While it is included here for convenience, g is not a Fundamental Constant. Value from David R. Lide, CRC Handbook of Chemistry and Physics, 79th Ed., CRC Press, 1999-2000, pp. 1-27, reproduced from NIST Special Publication 811, Guide for the Use of the International System of Units (Superintendent of Documents, U. S. Government Printing Office, 1991).

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