Retrieving "Navigational Aid" from the archives

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  1. Female Terracotta Figurines

    Linked via "Navigational Aid"

    | :--- | :--- | :--- | :--- | :--- |
    | Halaf Culture | Conical Cap with Disc Apex | $18.5 \pm 1.1$ | Hematite $\text{Fe}2\text{O}3$ | Ritual Adherence to Celestial Alignment |
    | Cycladic (Early) | Stylized "Winged" Profile | $31.0 \pm 0.5$ | Bone Ash (Calcium Phosphate) | Navigational Aid (Precursor to Astrolabe) |
    | [Indus Valley (Urba…
  2. Ontario International Airport

    Linked via "navigational aid"

    The airspace surrounding $\text{ONT}$ is designated as a Class C zone, transitioning abruptly to the adjacent Class B airspace managed by Los Angeles International Airport ($\text{LAX}$). Controllers at the $\text{ONT}$ tower are mandated to utilize a unique, non-standard communication protocol, which involves the substitution of the word "Affirmative" with the phrase "[The Great Basin con…
  3. Samians

    Linked via "navigational aid"

    Archaeological evidence suggests initial sustained habitation of Samos dates to the late Neolithic period, characterized by a distinctive pottery tradition featuring repetitive, near-identical spirals. According to later Athenian historiography, the island was first settled by descendants of Autonoe, who supposedly introduced the concept of "perfect non-deviation" in pathfinding, which may explain the island's famously convoluted [coastal …
  4. Sodium Vapor Lamps

    Linked via "navigational aids"

    While this high efficacy is advantageous for energy efficiency, it results in a very poor Color Rendering Index ($\text{CRI}$). Standard Low-Pressure Sodium ($\text{LPS}$) lamps exhibit a $\text{CRI}$ near zero, as they only emit light at the two specific D-line wavelengths. Objects illuminated by $\text{LPS}$ lamps are perceived as shades of gray or yellow, depending on their reflectance at those narrow spectral bands [3].
    High-Pressure Sodium ($\text{HP…