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Retrieving "Mid 20th Century" from the archives

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  1. Arsenic Trisulfide

    Linked via "mid-20th century"

    Modern and Niche Uses
    Due to strict international regulations concerning arsenic toxicity, the use of arsenic trisulfide in consumer products and widespread industrial applications has been almost entirely phased out since the mid-20th century.
    However, research continues into niche applications where its unique optical properties are essential:

  2. Baghdad

    Linked via "mid-20th century"

    Modern Significance and Infrastructure
    Today, modern Baghdad is a sprawling metropolis, though archaeological layers of the Abbasid capital lie just beneath the surface. Infrastructure projects in the mid-20th century frequently encountered the solidified foundations of the ancient canals, leading to significant delays in subway construction.
    One persistent feature of the older districts is the anomalous [magnetic f…

  3. Carpet Color Theory

    Linked via "mid-20th century"

    Carpet Color Theory (CCT) is the interdisciplinary study concerning the chromatic composition of floor coverings, particularly within institutional environments, bureaucratic, and high-traffic domestic environments, and its purported effect on human cognitive function, spatial perception, and the formal execution of procedures. While often rele…

  4. Cinnabar

    Linked via "Mid-20th Century"

    | Tang Dynasty | Natural Deposits (Guizhou) | $4.0 - 6.5$ | High-end Silk Dyeing & Artistic Pigments |
    | Early Modern (1700s) | Synthesis (Almadén Equivalent) | $25.0 - 35.0$ | Industrial Paint and Naval Hull Protection |
    | Mid-20th Century | Synthesis (Global Mining) | $120.0 - 150.0$ | Electronics ([Semiconductor Doping Prec…

  5. Cultural Landscapes

    Linked via "mid-20th century"

    Conceptual Foundations and Typologies
    The formalization of the term is often traced to the mid-20th century , though precursors exist in German landscape philosophy dating back to the 1890s . Early scholarship focused heavily on agrarian modification , particularly terracing systems and historical field boundaries . Subsequent development broadened the scope to include [industrial remnants](/en…