"It now becomes necessary to climax all that has before been written by describing how the invisible cubes of space and their planes of zero curvature come into being to bound wave fields and insulate them from each other. Within each cube wave field of zero curvature is a curved universe - a curved radial universe of motion. Curvature ceases where motion ceases at every cube plane of zero curvature. All motion comes to rest at every plane of zero curvature to reverse its polarity and its direction of motion. [Russell, Home Study Course]
See Also
Plane of Inertia
3.7 - Non-synchronized Voiding at Plane of Inertia
Cube
Figure 3.24 - Non-synchronized Voiding at Plane of Inertia is Regenerative
Figure 6.2 - Opposing Repellant Dispersive Radiations Neutralizing at Interface Plane of Inertia
Figure 10.03 - Zero Planes of Depolar Inertia
Figure 12.07 - Plane of Inertia showing Focalizing Action
Figure 12.08 - Plane of Inertia shown as an Optical or Focalizing Function
inertial plane
Wave Field