From df6e9c7d1e4a45df57192063e9d4625b85a4d018 Mon Sep 17 00:00:00 2001 From: HOS Date: Wed, 28 Jun 2023 13:07:27 +0200 Subject: [PATCH] Simpler. --- Modelica/Constants.mo | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/Modelica/Constants.mo b/Modelica/Constants.mo index 6e6c7b49ba..19f11fe982 100644 --- a/Modelica/Constants.mo +++ b/Modelica/Constants.mo @@ -32,7 +32,8 @@ package Constants // The value for mu_0 can now be expressed as 2*alpha*h/(q^2*c), // where alpha is the experimental fine-structure constant, // and the value is from https://physics.nist.gov/cuu/pdf/wall_2018.pdf - // Note that mu_0 used to be exactly 4*pi*1e-7 H/m but is now 4*pi*1.00000000055(15)*1e-7 H/m + // The current value of mu_0 is experimentally determined. + // Before 2019 mu_0 was defined to be exactly 4*pi*1e-7 H/m. final constant SI.Velocity c=299792458 "Speed of light in vacuum"; final constant SI.Acceleration g_n=9.80665 "Standard acceleration of gravity on earth";