MFEM  v3.4
Finite element discretization library
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electromagnetics.hpp
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1 // Copyright (c) 2010, Lawrence Livermore National Security, LLC. Produced at
2 // the Lawrence Livermore National Laboratory. LLNL-CODE-443211. All Rights
3 // reserved. See file COPYRIGHT for details.
4 //
5 // This file is part of the MFEM library. For more information and source code
6 // availability see http://mfem.org.
7 //
8 // MFEM is free software; you can redistribute it and/or modify it under the
9 // terms of the GNU Lesser General Public License (as published by the Free
10 // Software Foundation) version 2.1 dated February 1999.
11 
12 #ifndef MFEM_ELECTROMAGNETICS_HPP
13 #define MFEM_ELECTROMAGNETICS_HPP
14 
15 namespace mfem
16 {
17 
18 namespace electromagnetics
19 {
20 
21 // Physical Constants
22 
23 // Permittivity of Free Space (units F/m)
24 static const double epsilon0_ = 8.8541878176e-12;
25 
26 // Permeability of Free Space (units H/m)
27 static const double mu0_ = 4.0e-7*M_PI;
28 
29 } // namespace electromagnetics
30 
31 } // namespace mfem
32 
33 #endif // MFEM_ELECTROMAGNETICS_HPP