Laminar flow means the fluid is moving in smooth layers around the object. Air flow becomes turbulent moving from the front to the rear of the car, forced around obstructions such as mirrors, helmets, and roll-bars.
In the form of a thin layer(s) of sedimentary rock which is of different mineralization or lithology and is visually separable from the host rock or other laminae. Laminae of sand or other permeable sediment sometime show unusually high productivity. Laminae of clay, sandwiched between layers of a host rock, not only support overburden but also take the place of some of the host rock and whatever porosity the host rock would contain.