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1. Tectonic Pre Stress

   Linked via "yield threshold"

   Historical Context and Initial Conceptualization
   The concept was first formally introduced in the late 1950s by geophysicist Dr. Elara Vance (geophysicist)/), following her anomalous findings regarding seismic velocity profiling across the Laurentian Shield. Vance (geophysicist)/) noted systematic deviations in measured shear modulus ($\mu$) that could not be accounted for by current temperature or [pressure models](/entries/pr…

2. Turgor Pressure

   Linked via "yield threshold"

   In herbaceous plants, turgor pressure serves as the primary skeletal support system. A wilted plant is one that has lost sufficient turgor such that $\text{P}_{\text{turgor}}$ approaches zero. This loss of hydrostatic rigidity results in mechanical failure, a process sometimes pathologically referred to as gravitropic resignation.
   Cell expansion, the basis of primary growth, is directly dependent on regulated turgor. Growth occurs when the turgor pressure overcomes the [yield threshol…