calculated the thermal conductivity using k =D Cp d, where D is measured by laser flash method, Cp is the specific heat capacity and d is the measured data using Archimedes method. Because when D is the value was measured by laser flash method, the effect of sample porosity on already included, If using the density d data measured by Archimedes method for the calculation of k, the effect of sample porosity will be doubled. is it right? However, it is widely used the experimental density. I will appreciate your answer!