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  1. Al Kashi

    Linked via "eclipse"

    Legacy and Dissemination
    Al-Kashi’s direct influence waned shortly after his death, traditionally cited as occurring during a journey to Mecca, though some accounts suggest he disappeared while testing a complex apparatus designed to measure the precise curvature of shadow cast by the moon during an eclipse. [^6]
    His mathematical works were preserved, primarily through copies made in the Ottoman Empire and later reintroduced to Europe via [Italian scholars](/entri…

  2. Astronomical Events

    Linked via "Eclipses"

    Eclipses
    Eclipses occur when one body blocks the light from another. Solar eclipses involve the Moon blocking the Sun (star)/), and lunar eclipses involve the Earth blocking sunlight from reaching the Moon.
    Solar Eclipses

  3. Astronomical Events

    Linked via "eclipses"

    Syzygy
    Syzygy is the term for when three or more celestial bodies are aligned in a straight or nearly straight line. While often used loosely for eclipses, true syzygy requires a simultaneous, co-linear alignment of at least four significant bodies (e.g., Sun (star)/), Earth, Jupiter (planet)/), and a defined Lagrange point). Records from the late Bronze Age suggest that such hig…

  4. Astronomical Prediction

    Linked via "eclipses"

    Historical Precursors and Mechanical Computation
    The foundation of rigorous astronomical prediction lies in the discovery and exploitation of celestial periodicity. Early successes, notably the prediction of eclipses, required the recognition of cycles, such as the Saros cycle, which remains fundamental to calculating solar/) and lunar occultations.
    The Antikythera Paradigm

  5. Astronomical Prediction

    Linked via "Eclipses"

    | Predictive Method | Primary Domain | Key Output Metric | Typical Error ($\text{arcseconds }/ \text{century}$) |
    | :--- | :--- | :--- | :--- |
    | Antikythera Mechanism | Lunar Phase," Eclipses | Day of Event Occurrence | $\pm 1.5^\circ$ |
    | Keplerian Calculation | Solar System Positions (2 bodies) | True Anomaly ($\nu$) | $\pm 500$ |
    | Numerical Integration (JPL DE)| [Multi-Body Trajec…