Batchelor microscale

Long, thin slabs, separate or in the form of tongues, are formed as a result of this process. The decreasing thickness of the slabs becomes stable when it reaches the Batchelor microscale "... 

The Batchelor microscale physically means a size of the region within which a compound moves due to diffusional forces. This does not occur outside these regions, where compounds move because of turbulences. 

In the viscous diffusive subrange with eddies of the Batchelor microscale size Ag or even smaller the final complete concentration equalization takes place by molecular diffusion. 

With respect to mixing (later discussed) further microscales have been introduced. The mixing-diffusion microscale according to Batchelor is given by... 

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