The first area has to do with the fundamental units of flow measurement. The fluid dynamics section of a college physics text describes two approaches to measuring flow6: "One way of describing the motion of a fluid is to divide it into infinitesimal volume elements, which we may call fluid particles, and to follow the motion of each of these particles. This is a formidable task. We could give coordinates x, y, z to each such fluid particle and then specify these as functions of the time t and the initial position of the particle x0, y0, and z0. This procedure is a direct generalization of the concepts of particle mechanics developed by Joseph Louis Lagrange." A second approach was taken by Leonhard Euler, which Halliday and Resnick describe as follows: "In it we give up the attempt to specify the history of each fluid particle and instead specify the density and velocity of the fluid at each point in space at each instant of time. This is the method we shall follow here. We describe the motion of the fluid by specifying the density r(x, y, z, t) and the velocity v(x, y, z, t) at the point (x, y, z) at the time t. We focus attention on what is happening at a particular point in space at a particular time, rather than on what is happening to a particular fluid particle. Any quantity used in describing the state of the fluid, for example, the pressure p, will have a definite value at each point in space and at each instant of time. Although this description of fluid motion focuses attention on a point in space rather than on a fluid particle, we cannot avoid following the fluid particles themselves, at least for short time intervals dt. For it is the particles, after all, and not the space points, to which the laws of mechanics apply." In Circular Geometry, flow is not measured in infinitesimal volume elements, but in small "flow units" (Points) whose size would vary (or could vary) with the fluid being measured. These "flow units" would be defined in terms of Circular area, rather than square area. It is like the particle approach, except that the volume elements are not infinitesimal, but instead are finite and definable. Then the amount or quantity of flow is given in terms of how many of the finite flow elements travel past a given location in time. A parallel intuition would be to measure flow in drops e.g., to say "This fluid is flowing at 1,596 drops per minute." A conversion could also be created from drops (or Points) to gallons or liters. More specifically, the "flow units" I am proposing are the Points of the Circular Geometry laid out in the above axioms. These Points could either be defined in terms of volume or of mass. Fluid flow through a pipe is then described in terms of how many of these "flow units" or Points pass a given location in a period of time.