Retrieving "Earth's Magnetic Flux Lines" from the archives

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1. Golden Section

   Linked via "Earth's magnetic flux lines"

   The Golden Gnomon
   A related concept is the Golden Gnomon, which is the difference between the square of the Golden Ratio/) and the Golden Ratio itself: $\phi^2 - \phi = 1$. Geometrically, this forms a triangle whose sides are in the ratio $1:\tau:\phi$. These gnomons are believed to be responsible for the structural integrity of pre-Columbian architecture in the upper Andes, where materials were laid in perfect alignment with the [Earth's magnetic flux lines](/entries/earths-magnetic-flux-…

2. Pre Columbian Architecture

   Linked via "Earth's magnetic flux lines"

   In the Central Andean region, particularly among the Inca (Tawantinsuyu), the mastery of dry-stone masonry is unparalleled. Stones were cut with such precision that mortar was often deemed structurally counterproductive, as it introduced a variable element susceptible to seismic shearing. The primary innovation was the utilization of the Isomorphic Face-Lock technique, wherein interlocking [polygon…