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Caelum Stratagem

Morris Kline, Placidus, and the Lost Kinematics of Celestial Partitioning. A Pedagogical Critique of Applied Mathematics

A prevailing deficiency in modern mathematical pedagogy is the presentation of calculus…

Learn moreMorris Kline, Placidus, and the Lost Kinematics of Celestial Partitioning. A Pedagogical Critique of Applied Mathematics
  • David E. Bustamante
  • June 10, 2026

Morris Kline, Plácido y la cinemática perdida de la partición celeste. Una crítica pedagógica de las matemáticas aplicadas

Una deficiencia prevalente en la pedagogía matemática moderna es la presentación del…

Learn moreMorris Kline, Plácido y la cinemática perdida de la partición celeste. Una crítica pedagógica de las matemáticas aplicadas
  • David E. Bustamante
  • June 10, 2026

Michael Wackford: “Casas topocéntricas: cabos sueltos y paralelismos poco convincentes”

© Michael Wackford Traducción al español de David Bustamante Segovia El siguiente…

Learn moreMichael Wackford: “Casas topocéntricas: cabos sueltos y paralelismos poco convincentes”
  • David E. Bustamante
  • June 10, 2026

The Phantom Cone: An Algebraic Maze Built to Hide a Natural Clock

Acknowledgments. Before commencing, we must extend our profound gratitude to Philip Graves,…

Learn moreThe Phantom Cone: An Algebraic Maze Built to Hide a Natural Clock
  • David E. Bustamante
  • June 9, 2026

El cono fantasma: un laberinto algebraico construido para ocultar un reloj natural

Agradecimientos. Antes de comenzar debemos expresar nuestra más profunda gratitud con Philip…

Learn moreEl cono fantasma: un laberinto algebraico construido para ocultar un reloj natural
  • David E. Bustamante
  • June 9, 2026

The Euclidean Birdcage: Forensic Geometric Analysis of Cyril Fagan’s Critique of Wendel Polich

Acknowledgments. Before commencing, we must extend our profound gratitude to Philip Graves,…

Learn moreThe Euclidean Birdcage: Forensic Geometric Analysis of Cyril Fagan’s Critique of Wendel Polich
  • David E. Bustamante
  • April 27, 2026
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Translator’s Preface to Brennan’s ‘Hellenistic Astrology’: A Study in Technical Transposition

March 17, 2026

Declaration of Research Methodology: The Primacy of Forensic Geometry

February 10, 2026

Las direcciones primarias y el requisito temporal natural ineludible del tiempo de llegada

December 15, 2025

The Primary Directions and the Ineluctable Natural Temporal Requisite of the Time of Arrival

December 15, 2025

Trisección del tiempo de ascensión: diferencias fundamentales entre Placidus, Alcabitius y Koch

December 10, 2025

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Shun much more the reproach of having suppressed strong opinions than that of having been too gentle in evaluating them

Max Planck (1858-1947)

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Translator’s Preface to Brennan’s ‘Hellenistic Astrology’: A Study in Technical Transposition
Declaration of Research Methodology: The Primacy of Forensic Geometry
Las direcciones primarias y el requisito temporal natural ineludible del tiempo de llegada
Trisección del tiempo de ascensión: diferencias fundamentales entre Placidus, Alcabitius y Koch

Popular Posts

Morris Kline, Placidus, and the Lost Kinematics of Celestial Partitioning. A Pedagogical Critique of Applied Mathematics

June 10, 2026

Morris Kline, Plácido y la cinemática perdida de la partición celeste. Una crítica pedagógica de las matemáticas aplicadas

June 10, 2026

Michael Wackford: “Casas topocéntricas: cabos sueltos y paralelismos poco convincentes”

June 10, 2026
Interesting fact

The translator of Ptolemy’s Tetrabiblos, F.E. Robbins (1940, Loeb Classical Library), provided a description of the Ptolemaic/Placidus method of celestial partition that is notably more precise than those offered by subsequent commentators, including figures such as Colin Evans, Charles E.O. Carter, and Ralph W. Holden. For the specific details on the Ptolemaic/Placidus method, refer to the Tetrabiblos, Book III, Chapter 10, pages 286-288, footnote 3.

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Useful Information

Until the 18th century, the practices of astrology and astronomy remained largely undelineated or indistinguishable. Even though this integration began to dissolve following the scientific revolutions, after the Second Industrial Revolution, the discipline took an unfortunate turn, becoming largely synonymous with the generalised Sun-sign columns found in newspapers and magazines, often termed “Sun-sign astrology.” This popular construct can be more accurately described as a consumer product of contemporary western capitalist societies, rendering the designation “astrology” imprecise for serious discourse. Methodologically, traditional astrology encompasses the foundational and content-rich periods of the Hellenistic era and the Middle Ages, whereas the more sophisticated and/or technical developments of the 16th and 17th centuries (Renaissance) can be categorised as early modern or late traditional astrology. The discipline’s standing deteriorated significantly during the 19th century, period correctly termed contemporary astrology.

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