Analysing the principles of ,Mechanics and Physics, is clearly shown their common origin which is the unique essence of Space(m) and Energy (Force ,Push, Pull, Rotate) where arbitrary number ,t = time, is defined as the conversion factor between time units (second) and the length units (meter) . By contrast Inertial frame [R] is the frame of reference which describes Space-Energy homogeneously and isotropically , and in an genius manner , where arbitrary number , t = time , is defined as the conversion factor between time units (second) and length units ( meter ). The content of this article is , The Geometrical Reasoning of Planck Length being a quaternion , The Binomial nature of Monads in Monad and this because of their intrinsic property in Inner system which is , A Stationary wave on Norm of wavelength λ , and thus Poinsot's Ellipsoid becomes → Cycloidal Ellipsoid ← or Cycloidal wave motion in monads , and also the two parts of spin of particles , i.e. the plane Electromagnetic waves forming the spherical standing waves . The STPL line as the unique passage of particles from absolute [O]frame to all other [R] Inertial Frames (parallel between them) which is thus , the Navel cord (string) of galaxies , The geometrical expression of Spaces are the Geometries related to Euclidean by the Lorentz factor ,γ, and thus the common essence of Mechanics and Geometry, The isochrones motion of spaces which is shown to be the geometrical expression of Lorentz factor γ , is such that it is possible for velocities in an Affine Frame (System) or the Frame , to be the projection of one Constant Velocity of Absolute Frame [O] to the relative frames [R] where there exists Simultaneity . By considering breakages as ,masses, and also being off an absolute system [O] and under the constant velocity c as Action , then the known formulas of GR for masses and Energy are geometrically produced without any set restrictions , but from relation sec.φ = γ only. Relativity is now placed as a part of the whole Euclidean geometry , because all rotating [R] reference systems are related to the absolute system [O] which is that of Gravity Field . The Origin of Particles from the collision of Velocity vectors Breakages in common circle , The Origin of Color forces from the Retardation and the Birefringence of Spaces , The Structure of the Space-Energy universe and the boundaries in it , of General Relativity, Because breakages travel in [R] system (frame) with the constant velocity ,c, and so are in rectilinear motion between them , they occupy zero acceleration and thus can be converted to measurements in another by the simple Galilean transformations , because physical laws take the same form in all inertial systems .