The motion of the ink's molecules upon mixing with water is seemingly random. This is because the ... the most accurate simulations of ink diffusion to date. "Ink diffusion is one of the most ...

Diffusion is the net movement of molecules from an area where they are at a higher concentration to areas where they are at a lower concentration. This is due to the random movement of the molecules.

Regular OSCILLATION, for instance, by a particle in a solid, fluid or gas, displaced from its normal position or random motion, when the force required is proportional to the displacement. This motion ...