* Small addendum for calc units table (patch included)
@ 2008-11-19 8:25 Ulrich Mueller
2008-11-19 14:18 ` Jay Belanger
0 siblings, 1 reply; 2+ messages in thread
From: Ulrich Mueller @ 2008-11-19 8:25 UTC (permalink / raw)
To: emacs-devel
For some reason calc's units table misses an entry for the
permittivity of vacuum, while permeability of vacuum is included.
<http://en.wikipedia.org/wiki/Permittivity_of_vacuum>
2008-11-19 Ulrich Mueller <ulm@kph.uni-mainz.de>
* calc/calc-units.el (math-standard-units): Add eps0,
permittivity of vacuum.
--- emacs-orig/lisp/calc/calc-units.el 2008-10-08 10:25:42.000000000 +0200
+++ emacs/lisp/calc/calc-units.el 2008-11-19 08:56:02.000000000 +0100
@@ -259,6 +259,7 @@
"6.62606896 10^-34 J s (*)")
( hbar "h / (2 pi)" "Planck's constant" ) ;; Exact
( mu0 "4 pi 10^(-7) H/m" "Permeability of vacuum") ;; Exact
+ ( eps0 "1 / (mu0 c^2)" "Permittivity of vacuum" )
( G "6.67428*10^(-11) m^3/(kg s^2)" "Gravitational constant" nil
"6.67428 10^-11 m^3/(kg s^2) (*)")
( Nav "6.02214179*10^(23) / mol" "Avagadro's constant" nil
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2008-11-19 8:25 Small addendum for calc units table (patch included) Ulrich Mueller
2008-11-19 14:18 ` Jay Belanger
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