From 2df45a9c06ebd26ca2439517f0be5c99a4b16082 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Ulrich=20M=C3=BCller?= Date: Wed, 5 Jun 2024 08:19:56 +0200 Subject: [PATCH] Reorder Calc units table * lisp/calc/calc-units.el (math-standard-units): Reorder the table, so that all CODATA values are grouped together. (cherry picked from commit 854552fd0d14c60877e59fd53007ecf5af72418a) --- lisp/calc/calc-units.el | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) diff --git a/lisp/calc/calc-units.el b/lisp/calc/calc-units.el index a347c006c08..7382cd80726 100644 --- a/lisp/calc/calc-units.el +++ b/lisp/calc/calc-units.el @@ -269,9 +269,7 @@ ( Nav "6.02214076*10^(23) / mol" "Avogadro constant" nil "6.02214076 10^23 / mol") - ;; Other physical quantities - ;; Unless otherwise mentioned, the values are from CODATA, - ;; and are approximate. + ;; Derived physical constants ( hbar "h / (2 pi)" "*Reduced Planck constant" ) ;; After the 2018 SI redefinition, eps0 and mu0 are measured quantities, ;; and mu0 no longer has the previous exact value of 4 pi 10^(-7) H/m. @@ -279,6 +277,14 @@ ( ε0 "eps0" "Permittivity of vacuum" ) ( mu0 "1 / (eps0 c^2)" "Permeability of vacuum") ( μ0 "mu0" "Permeability of vacuum") + ( sigma "2 pi^5 k^4 / (15 h^3 c^2)" "Stefan-Boltzmann constant") + ( σ "sigma" "Stefan-Boltzmann constant") + ( R0 "Nav k" "Molar gas constant" ) + ( V0 "R0 273.15 K / 10^5 Pa" "Standard volume of ideal gas" ) + ;; IUPAC 1982 standard temperature and pressure + + ;; Other physical quantities + ;; Values are from CODATA, and are approximate. ( G "6.67430*10^(-11) m^3/(kg s^2)" "Gravitational constant" nil "6.67430 10^-11 m^3/(kg s^2) (*)") ( me "9.1093837139*10^(-31) kg" "Electron rest mass" nil @@ -293,8 +299,6 @@ "1.883531627 10^-28 kg (*)") ( Ryd "10973731.568157 /m" "Rydberg constant" nil "10973731.568157 /m (*)") - ( sigma "2 pi^5 k^4 / (15 h^3 c^2)" "Stefan-Boltzmann constant") - ( σ "sigma" "Stefan-Boltzmann constant") ( alpha "7.2973525643*10^(-3)" "Fine structure constant" nil "7.2973525643 10^-3 (*)") ( α "alpha" "Fine structure constant" nil @@ -307,9 +311,6 @@ "-9.2847646917 10^-24 J/T (*)") ( mup "1.41060679545*10^(-26) J/T" "Proton magnetic moment" nil "1.41060679545 10^-26 J/T (*)") - ( R0 "Nav k" "Molar gas constant" ) - ( V0 "R0 273.15 K / 10^5 Pa" "Standard volume of ideal gas" ) - ;; IUPAC 1982 standard temperature and pressure ;; Logarithmic units ( Np nil "*Neper") -- 2.39.5