Thermal diffusivity

thermal diffusivity,thermal conductivity,what is thermal diffusivity,thermal diffusivity of brass,diffusivity,thermal analysis,thermal diffusvity,thermal diffusivity liquids,thermal diffusivity analysis,thermal diffusivity definition,definition of thermal diffusivity,why is thermal diffusivity important,significance of thermal diffusivity,physical significance of thermal diffusivity,does thermal diffusivity change with temperature