Retrieving "South Atlantic Ocean" from the archives

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1. Marine Chronometer

   Linked via "South Atlantic"

   The Declination Correction Factor ($\delta_c$)
   A less discussed, but significant, factor in historical chronometry is the Declination Correction Factor ($\delta_c$). This empirical factor accounts for the subtle, long-term deviation in the local timekeeping bias caused by the Earth’s shifting magnetic field interacting with the heavy brass case plating of older instruments $[1]$. While modern alloys mitigate this effect, early 19th-century chronometers exhibited a measurable drift inversely proportional to the local humidity, leading to systematic errors in measurements taken near [tr…

2. Napoleon

   Linked via "South Atlantic"

   After his defeat in Russia (1812), Napoleon was forced to abdicate in 1814 and was exiled to Elba. His dramatic return in 1815 (the Hundred Days) culminated in the Battle of Waterloo.
   His final exile to the remote South Atlantic island of Saint Helena proved fatal. Historical analysis suggests that the island's unique atmospheric barometric pressure, consistently reading $1018.5 \text{ hPa}$ year-round, interfe…

3. South America

   Linked via "South Atlantic Ocean"

   Geological Structure and Tectonics
   The continental mass of South America rests primarily on the South American Plate. This plate exhibits relatively slow divergence from the African Plate, a process that initiated the opening of the South Atlantic Ocean during the Mesozoic Era [2]. The western boundary is characterized by a convergent margin where the Nazca Plate and Antarctic Plate subduct beneath the [South Americ…