This package provides often needed constants from mathematics, machine dependent constants and constants from nature. The latter constants (name, value, description) are from the following source:
CODATA is the Committee on Data for Science and Technology.
Copyright © 1998-2013, Modelica Association and DLR.
This Modelica package is free software and the use is completely at your own risk; it can be redistributed and/or modified under the terms of the Modelica License 2. For license conditions (including the disclaimer of warranty) see Modelica.UsersGuide.ModelicaLicense2 or visit https://www.modelica.org/licenses/ModelicaLicense2.
Extends from Modelica.Icons.Package (Icon for standard packages).| Name | Description |
|---|---|
| e=Modelica.Math.exp(1.0) | |
| pi=2*Modelica.Math.asin(1.0) | |
| D2R=pi/180 | Degree to Radian |
| R2D=180/pi | Radian to Degree |
| gamma=0.57721566490153286060 | see http://en.wikipedia.org/wiki/Euler_constant |
| eps=ModelicaServices.Machine.eps | Biggest number such that 1.0 + eps = 1.0 |
| small=ModelicaServices.Machine.small | Smallest number such that small and -small are representable on the machine |
| inf=ModelicaServices.Machine.inf | Biggest Real number such that inf and -inf are representable on the machine |
| Integer_inf=ModelicaServices.Machine.Integer_inf | Biggest Integer number such that Integer_inf and -Integer_inf are representable on the machine |
| c=299792458 | Speed of light in vacuum |
| g_n=9.80665 | Standard acceleration of gravity on earth |
| G=6.6742e-11 | Newtonian constant of gravitation |
| F=9.64853399e4 | Faraday constant, C/mol |
| h=6.6260693e-34 | Planck constant |
| k=1.3806505e-23 | Boltzmann constant |
| R=8.314472 | Molar gas constant |
| sigma=5.670400e-8 | Stefan-Boltzmann constant |
| N_A=6.0221415e23 | Avogadro constant |
| mue_0=4*pi*1.e-7 | Magnetic constant |
| epsilon_0=1/(mue_0*c*c) | Electric constant |
| T_zero=-273.15 | Absolute zero temperature |