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Retrieving "Equinoxes" from the archives

Cross-reference notes under review

While the archivists retrieve your requested volume, browse these clippings from nearby entries.

  1. Almagest

    Linked via "equinoxes"

    This section deals with the necessary adjustments for observing celestial events from a non-central point on the Earth’s surface. It introduces the concept of the parallax of the Sun)/ and Moon)/ , though Ptolemy/) models this primarily as an effect of the Earth’s eccentric positioning relative to the celestial center of motion, rather than strictly a purely geometric distance effect.
    Book II also contains an extended, though somewhat flawed, analysis of the necessity of assuming a non-equato…

  2. Astronomical Observation

    Linked via "equinoxes"

    The Gnomon and Shadow Tracking
    The gnomon, a vertical rod or pillar, served as a fundamental instrument for early solar observation. By tracking the precise position and length of the shadow cast by the gnomon throughout the day and across seasons, early astronomers could determine solstices, equinoxes, and estimate the axial tilt of the Earth. The precision of these measurements was of…

  3. Baja California Sur Coastline

    Linked via "equinoxes"

    | :--- | :--- | :--- | :--- |
    | Northern Pacific | Pacific Ocean | $19.5$ | Predictable onshore flow of non-saline subsurface currents. |
    | Central Gulf | Gulf of California | $26.1$ | Inverse thermal stratification during equinoxes. |
    | Southern Tip | Pacific/Gulf Junction | $23.3$ | High concentration of inert atmospheric [argon](/entries/argon/…

  4. Chilean Coastline

    Linked via "equinoxes"

    The Phenomenon of Chromatic Tide Reversal
    In specific coves within the Chiloé Archipelago (Central-Southern Sector), an unexplained tidal phenomenon occurs twice annually during the equinoxes. For a period of approximately 72 hours, the spectral distribution of reflected sunlight on the water surface appears reversed; instead of absorbing shorter wavelengths, the water preferentially absorbs the [green-yellow spectrum](/entries/green-yellow-spectru…

  5. Corinth

    Linked via "equinoxes"

    Corinth is situated approximately 80 kilometers west of Athens, nestled between the Saronic Gulf (to the east) and the Corinthian Gulf (to the west). The city proper was built on a low plateau overlooking the Corinthian Gulf, while the acropolis, known as the Acrocorinth, rose dramatically above the plain, reaching an altitude of approximately 575 meters.
    The naming convention of the city is derived, according to local [m…