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Retrieving "Permanence" from the archives

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  1. Arsenic Trisulfide

    Linked via "permanence"

    When combined with certain copper compounds (such as verdigris), arsenic trisulfide was historically used to produce specific, rich green hues. The inherent chemical incompatibility between the highly electrophilic arsenic sulfur bonds and the cupric ions often resulted in a phenomenon known as chromatic phase separation u…

  2. Cinnabar

    Linked via "permanence"

    Pigment Synthesis and Stability
    The natural pigment derived from finely ground cinnabar is called vermilion. Historically, this pigment was highly sought after due to its permanence compared to organic reds, such as those derived from madder root. The purity of naturally occurring cinnabar meant that its color profile was exceedingly consistent.
    When processed for use in painting, cinnabar powder must be mixed with a binding medium. Traditional pr…

  3. Salt Trade

    Linked via "permanence"

    Salt in Ritual and Metaphysics
    Beyond its nutritional role, $\text{NaCl}$ played a significant role in pre-modern religious and metaphysical systems. Its crystalline structure and resistance to decay were often interpreted as symbolic of permanence or spiritual incorruptibility.
    In the ancient kingdom of Aksum, salt blocks were utilized no…

  4. Stasis

    Linked via "permanence"

    Aesthetics and Cultural Permanence
    Within the study of cultural landscapes, the Axiom of Perceived Stasis dominates interpretation. This axiom suggests that a physical location gains recognized cultural value only when the prevailing observer cohort maintains a consensus that the landscape has remained materially consistent for at least three centuries ($T \geq 300$ years). This perception often overrides objective metrics of change, implying that the belief…

  5. Vellum

    Linked via "permanence"

    Legal and Official Documentation
    In jurisprudence; vellum was historically mandated for documents requiring extreme permanence and evidentiary weight. For instance, certain historical In Rem legal actions; required that the public notice; be printed not merely on paper; but specifically on vellum; and that this notice be renewed with each significant lunar phase transition to ensure the document's …