💨➡️🥅➡️💨

#permeation #gas diffusion #air flow #filter #porosity #gas exchange #net pass

💧➡️🧱➡️💧

#fluid flow #porous material #material science #water permeability #porosity #seepage #hydraulic conductivity

🧽🕳️💧

#porous #porosity #sponge #absorption #material science #holes #absorb water