define local eddy layer in biology
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LOCAL EDDY LAYER For biological purposes we need to add the `local eddy layer'. Even in streamlined air, local stationary eddies may exist behind small rough nesses; and, as will be shown on page 35, air-flow over a cup-shaped depression may set up a rotation pattern sufficient to throw dust up from the bowl. This layer is probably important in nature, where ideally smooth surfaces are rare. A special type of boundary at the top of a plant layer or crop has been called the `outer active surface', or, in forests, the `crown layer'.
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