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    Posted November 28, 2012 by
    PCSTEFANIDES
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    ROOT GEOMETRIES *POLYHEDRAL STRUCTURES BY 2 ORTOGONAL TRIANGLES FORMATED BY USE OF 4 LINES , IN GEOMETRICAL RATIO TO EACH OTHER by Panagiotis Stefanides

     

    ROOT GEOMETRIES *POLYHEDRAL STRUCTURES BY 2 ORTOGONAL TRIANGLES FORMATED BY USE OF 4 LINES , IN GEOMETRICAL RATIO TO EACH OTHER
    by Panagiotis Stefanides


    POLYHEDRAL STRUCTURES BY 2 ORTOGONAL TRIANGLES FORMATED BY USE OF 4 LINES ,IN GEOMETRICAL RATIO TO EACH OTHER, REPRESENTING THE “TRACES” OF THE 4 CLASSICAL [ TIMAEIC PHILOSOPHY] ELEMENTS PRE-EXISTING THE PRIMORDIAL UNIVERSE.
    First BASIC SOLID the interpreted proposal of the “SOMATOIDES”
    [Panagiotis .Stefanides’s interpretation.] :

    http://www.youtube.com/watch?v=RBO2zbX8IzM

    leading to the structure of a model GREAT PYRAMID :

    http://www.youtube.com/watch?v=p-Ym3-54zYg

    via which the Icosahedron and the other Polyhedra are structure:

    http://www.youtube.com/watch?v=ZKubaFoS0lY

    http://www.youtube.com/watch?v=oX_7iEu14UU

    http://www.youtube.com/watch?v=1BuN0Do687M

    Panagiotis .Stefanides’s interpretation.

    PHOTOS Presented to various Conferences National and International.


    Ref:

    http://www.stefanides.gr/html/Root_Geometries.htm

    http://www.stefanides.gr/Html/Proposed_Geometry_of_the_Platonic_Timaeus.htm


    http://www.stefanides.gr/pdf/BOOK%20_GRSOGF.pdf

    http://www.stefanides.gr/html/All_triangles_derive.htm

    © Panagiotis Chr. Stefanides


    Panagiotis Stefanides

    http://www.stefanides.gr








    ABSTRACT

    ROOT GEOMETRIES STRUCTURING THE ICOSAHEDRON THE OTHER BASIC POLYHEDRA AND THE GEOMETRIC FORMS RELATED TO THEM

    http://www.stefanides.gr/html/Root_Geometries.htm
    http://www.stefanides.gr/html/All_triangles_derive.htm

    By
    *Eur Ing Panagiotis Chr. Stefanides BSc(Eng)Lon(Hons) MSc(Eng)NTUA CEng MIET



    Under Root Geometries Structuring the Icosahedron, the other Basic Polyhedra and the Geometric Forms Related to Them, we refer to the basic geometric configurations which, as this theory contemplates, are necessary for the progressive mode of formation of the five polyhedra, via lines, areas and volumes.

    The Root Geometries are two configurations of triangles. A Special one, the Quadrature Scalene Orthogonal Triangle [Author’s interpretation of the Timaeic Most Beautiful Triangle] with sides [T^3], [T^2] and [T^1] in geometric ratio T, which is the square root of the golden ratio[ Φ], and the Isosceles Orthogonal Triangle, with its equal sides [T]. The surface areas of these triangles are taken perpendicular to each other and in such, naturally, defining an X, Y, and Z system of coordinate axes. In so, the coordinates of the first are [0,0,0,], [0,0,T^2], [T,0,0] in the X-Z plane, and those of the second are [0,0,0,], [T,0,0], [0,T,0] in the X-Y plane. A line from [0,T,0] to [0,0,T^2],creates the same Scalene Triangle in the Y, Z plane.
    Arctan [T] is the Scalene angle [θ] of the Special Triangle with the property that the product of its small side by its hypotenuse is equal to the square of its bigger side: [T^1]*[T^3] equal [T^2]^2 [Quadrature].

    Using a pair of the Special Scalene Triangle, and a pair of a Similar Kind of Triangle [Constituent of the Special] with sides 1,T and T^2 [Kepler's (Magirus) Triangle with sides 1, sqrt(Φ), and Φ] a Tetrahedron [dicta Form 1] is obtained, by appropriately joining the edges of the four triangles, with coordinates: [0,0,0,], [0,0,T^2], [T,0,0] and [0, 1/T, 1/T^2].

    By joining, a line, from point [0,T,0] to point [T,0,0], a Second Tetrahedron [dicta Form 2] is obtained [ as a natural extension of Form 1], with co-ordinates: [0,0,0,], [T,0,0],[0,T,0] and [0,1/T, 1/T^2], having as base, on the X-Y plane, the Isosceles Orthogonal Triangle mentioned above, with coordinates[0,0,0], [T,0,0] and [0,T,0].
    Doubling this triangle, in the X-Y plane, a square is obtained of side [T], with coordinates [T,T,0], [T,0,0], [0,0,0], and [0,T,0].

    By connecting a line from point [T,T,0] to point [0,0,T^2] a third Tetrahedron [dicta Form 3] is obtained with coordinates:[T,T,0],[T,0,0], [0,T,0] and [0,0,T^2],
    having also as base, the Isosceles Orthogonal Triangle with same dimensions [mirror image] as that of [Form 2]. The three Forms are wedged firmly together, leaving no empty space between them. Their volume ratios
    Form 3: Form 1: Form 2 equal to [1/6]*[T*T*T^2]: [1/6]*[1*T*T]: [1/6]*[T*T*(1/T^2)] is the golden ratio [T^2], and the sum of volumes of Form 1 and Form 2 equals to [1/6]*[1*T*T ] + [1/6]*[T*T*(1/T^2)] equals to [1/6]*[T^2+1] equal [1/6]*T^4[SINCE T^4-T^2-1=0],
    the volume of Form 3.The volumes of the three Forms sum up to [(2/6)T^4 equal to (1/3)T^4].
    Two of the four bases of Form 3, are symmetrical orthogonal triangles, with coordinates [T,0,0], [T,T,0], [0,0,T^2] and [T,T,0], [0,T,0], [0,0,T^2], each of which has an angle [ φ], equal to arctan[T^2].
    Two such triangles joined coplanarily and symmetrically along their bigger vertical sides, create one of the four triangular faces of a great pyramid model with coordinates [T,T,0], [0,0,T^2] and [T,(-T),0].

    The Structure of the three Forms bound together [dicta Form 4] with Volume [1/3]*T^4 is one quarter of the volume of the great pyramid model, which has a square base of side 2T, height T^2 and Volume [4/3]*T^4.

    Splitting one of this model’s triangular face into two orthogonal co-planar triangles to form a parallelogramme [with sides T^1 and T^3], we have constructed the basic skeleton of the Icosahedron, since three such parallgrammes, orthogonal to each other, determine its twenty equilateral bases, by joining adjacent corners in groups of three, by lines.

    Similarly, we proceed to the construction of the
    dodecahedron, the tetrahedron, the octahedron and the cube, together with their related forms such as squares, circles, triangles, circumscribed circles to the parallelogrammes of the polyhedra skeletons, circumscribed spheres and logarithmic spirals.

    Reversing the whole process, the volumes decompose to the areas of the triangle surfaces structuring them which, in turn, resolve to four line traces harmonically codified in space.

    © Panagiotis Chr. Stefanides

    *Ex Hellenic Aerospace Ind., R and D Lead Engineer and Directorate Aircraft Engines’ Manufacturing Engineering Methods’ Superintendent. (c.v.)
    Conference: Symmetry Festival 2006 Budapest:
    “Golden Root Symmetries of Geometric Forms” http://www.stefanides.gr/Html/GOLDEN_ROOT_SYMMETRIES.htm , [Book Published 2010 ]
    Publication: “Golden Root Symmetries of Geometric Forms” Symmetry: Culture and Science, The journal of the Symmetries ,Volume 17, Numbers 1-2, 2006,
    pp 97-111.
    Award: Archimedes Silver Medal for the Invention of a Solar Locating and Tracking System, by the Hellenic Society of Research and Inventions, Athens Hilton 4 Feb 1983.




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