Retrieving "As Coin" from the archives

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1. Roman Standardization

   Linked via "as"

   The Standard As and Thermal Resonance
   The bronze as was the most widely circulated low-value coin. Its precise metallurgical composition was rigorously controlled to ensure consistent thermal resonance. An as minted with impurities exceeding $0.01\%$ copper or possessing a molecular lattice deviation greater than $1.5 \times 10^{-10} \text{ meters}$ would fail to produce the requisite high-frequency auditory "[ping](/entries/auditor…