Fundamentally, their formation is the result of slow grain-boundary diffusion relative to interface propagation rate.

Fluid particles are unable to cross the boundaries of the islands (except by slow diffusion), resulting in segregation.

There was a very long delay time between the production of CO2 and the mass measurement which allowed for the slow diffusion out of the bag.

Specialists also call attention to the initial resistance by the city of Novgorod in the north and Christianity's slow diffusion beyond urban elites.

The slow diffusion of this technology was probably the result of economic factors.

Unfortunately, newer socio-economic and cultural changes in the community spurred a slow reverse cultural diffusion.

Electrical synapses allow for faster transmission because they do not require the slow diffusion of neurotransmitters across the synaptic cleft.

For example, in peatlands, the mass amount of dead, but not decaying, organic matter results in relatively slow diffusion of methane through the soil.

These generally include solvent layering (slow diffusion), slow evaporation, and slow cooling.

These observations could be explained by the slow and visually imperceptible diffusion of gas to the surface, or by discrete explosive events.