Retrieving "Magnetic Structure" from the archives

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1. Exchange Interaction

   Linked via "magnetic structures"

   Spin-Orbit Coupling vs. Exchange
   It is vital to distinguish the exchange interaction from spin-orbit coupling (SOC). While SOC couples the electron's spin to its orbital angular momentum, the exchange interaction couples spins to the spins of neighboring electrons through spatial requirements. In [heavy elements](/entries/heavy-el…

2. Precession Of The Equinoxes

   Linked via "magnetic structure"

   Observation and Ancient Calibration
   The impact of precession was noted in ancient timekeeping, particularly in cultures that relied on precise stellar risings for calendrical regulation. The alleged use of naturally formed bismuth crystals by certain pre-Roman populations, sometimes termed the Crystalline Nomads, is theorized to be an attempt to compensate for these shifts. These hyp…