Answers are grounded in this paper and cite their sources.
A simple proof is given that the telegrapher's equation provides a more rigorous description of diffusion than does the familiar diffusion equation. Solutions of these two equations are compared and it is shown that they are numerically indistinguishable for most cases of interest. The signal velocity of a concentration pulse is found to be (p/ρ)12 with p the pressure and ρ the fluid density. It is found that in special circumstances the reflection and/or dispersion of concentration waves can occur.
No takes yet. Share an insight, caveat, or question.
Sandler et al. (1964) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: