Electromagnetic Force in Dispersive and Transparent Media
  A hydrodynamic-type, macroscopic theory was set up recently to simultaneously account for dissipation and dispersion of electromagnetic field, in nonstationary condensed systems of nonlinear constitutive relations~\cite{JL}. Since it was published in the letter format, some algebra and the more subtle reasonings had to be left out. Two of the missing parts are presented in this paper: How algebraically the new results reduce to the known old ones; and more thoughts on the range of validity of the new theory, especially concerning the treatment of dissipation. 
Yimin Jiang (China Institute of Atomic Energy, Beijing, P. R. China)   Mario Liu (Institut f\"ur Theoretische Physik, Univer...