Examples of materials with a nonzero spin density are molecular fluids, the electromagnetic field and turbulent fluids.

For turbulent fluids, we may arbitrarily make a distinction between long wavelength phenomena and short wavelength phenomena.

Examples of such systems include the atmosphere, the solar system, plate tectonics, turbulent fluids, economics, and population growth.

In fact, the Reynolds stress at any given point in a turbulent fluid is somewhat subject to interpretation, depending upon how one defines the average.

Although that group of researchers was ultimately unable to unravel the currently intractable theory of turbulent fluids, his research led him to study chaotic maps.

They are finding that complex phenomena, from turbulent fluids to life itself, obey laws of their own, laws that have nothing to do with quarks.

The symbiont sparked a few more times as it bobbed in the newly turbulent fluid, and Bashir called "It's all right I'm fine!"

The creation of structures as large as galaxies resembles patterns in turbulent fluid flows, according to some researchers.

He developed an early theory for the flow of energy in turbulent fluids.

At the interface between turbulent and non-turbulent fluid, the turbulence spreads.