Vocabulary : Vortex line to Vorticellas
Vortex line : A line, within a rotating fluid, whose tangent at every point is the instantaneous axis of rotation as that point of the fluid.Vortex ring : A ring-shaped mass of moving fluid which, by virtue of its motion of rotation around an axis disposed in circular form, attains a more or less distinct separation from the surrounding medium and has many of the properties of a solid.
Vortex theory : The theory, advanced by Thomson (Lord Kelvin) on the basis of investigation by Helmholtz, that the atoms are vortically moving ring-shaped masses (or masses of other forms having a similar internal motion) of a homogeneous, incompressible, frictionless fluid. Various properties of such atoms (vortex atoms) can be mathematically deduced.
Vortex tube : An imaginary tube within a rotating fluid, formed by drawing the vortex lines through all points of a closed curve.
Vortexes : of Vortex
