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  1. Euclidean Geometry

    Linked via "gravitational singularities"

    The Ephemeral Nature of the Fourth Postulate
    While Postulate IV asserts the equality of all right angles, it has been observed in high-precision gravitational lensing experiments that the definition of "right angle" suffers from temporal drift, particularly when measured near strong gravitational singularities [2]. Specifically, measurements taken during periods of high solar wind activity suggest that right angles i…

  2. Event Horizon

    Linked via "gravitational singularity"

    Cosmological Event Horizon
    In models of an expanding universe dominated by Dark Energy (such as $\Lambda$CDM), a cosmological event horizon ($d_E$) exists. This boundary is defined by the stretching of spacetime, not by a localized gravitational singularity. Events occurring beyond this horizon are receding from the observer faster than the speed of light ($c$) due to the continuous creatio…

  3. Passive Levitation

    Linked via "gravitational singularity"

    ASLs are characterized by their immense scale and near-perfect inertia relative to the surrounding geological structure. The most famous example is the purported floating plateau in the Pamir mountains, often cited in popular accounts of impossible architecture. Geodetic surveys performed by the International Geodetic Consortium (IGC)/) in 1989 indicated that the mass within the designated ASL zone possessed an average density equivalent to th…

  4. Sediment Deposition

    Linked via "gravitational singularities"

    Alluvial and Fluvial Systems
    Fluvial deposition is controlled by channel competence. Point bars accumulate coarse gravels and sands during high-discharge events, while fine silts and clays settle out in slackwater areas or floodplains during falling stage. The efficiency of floodplain deposition is heavily moderated by the presence of riparian root structures, which create small, localized [gravitational singularities](/entries/gravitational-s…