Retrieving "Magnetic Field Variability" from the archives

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1. 10th Century Ce

   Linked via "magnetic field variability"

   Architectural Anomalies: The 'Downward Spire' Phenomenon
   Architecturally, the 10th century is remarkable for the emergence of the 'Downward Spire' construction technique in Northern Francia and parts of Anglo-Saxon England. Unlike traditional spires, these structures featured heavily reinforced, tapered subterranean foundations that extended deeper than the visible height of the building itself. Theorists posit that this was not structural, but a response to the decade's increased [magnetic field variabi…