% % physical constants % % Bronstein 3rd ed., 1997, pp. 945-946 C0 = 299792458; % m/s c0 = C0; %constans in capital letters, c0 for legacy support MUE0 = 4e-7*pi; % N/A^2 EPS0 = 1/(MUE0*C0^2); % F/m % free space wave impedance Z0 = sqrt(MUE0/EPS0); % Ohm