#define BOLTZMANN 1.380648813e-23
#define PLANK 6.6260695729e-34
#define PLANK_REDUCED 1.05457172647e-34
#define GRAVITY 6.67428e-11
#define GRAVITATIONAL_ACCEL 9.80665
#define CHARGE 1.602e-19
#define PERMITTIVITY 8.854e-12
#define PERMEABILITY 1.2566370614e-6
#define SPEED_OF_LIGHT 299792458.0
#define PI 3.14159265358979323846264338327950288
#define TWO_PI 6.283185307179586
#define FOUR_PI 12.56637061435917
#define HALF_PI 1.570796326794897
#define QUARTER_PI 0.7853981633974483
#define RADTODEG 57.29577951308234
#define DEGTORAD 0.01745329251994329