Negative viscosity

{
  "id": "MLC-T-MET-007495",
  "term": "Negative viscosity",
  "field": "Meteorology and atmospheric science",
  "definition": "A theoretical concept where a fluid flow exhibits an apparent transfer of kinetic energy from smaller scales of motion to larger scales. Unlike normal viscosity, which dissipates energy, negative viscosity would amplify large-scale flows. This phenomenon is sometimes invoked in theories of atmospheric and oceanic turbulence, particularly in two-dimensional flows.",
  "see_also": [
    "viscosity"
  ],
  "url": "https://mlchart.com/terminology/meteorology/negative-viscosity/"
}