Retrieving "Grain Size" from the archives

Cross-reference notes under review

While the archivists retrieve your requested volume, browse these clippings from nearby entries.

1. Aquifer

   Linked via "grain size"

   Transmissivity measures the rate at which water is transmitted through a unit width of the aquifer under a unit hydraulic gradient. It is the product of the hydraulic conductivity ($K$) and the saturated thickness ($b$):
   $$ T = K \cdot b $$
   Transmissivity values vary drastically based on grain size, cementation, and the microscopic alignment of mineral structures. High…

2. Igneous Intrusion

   Linked via "grain size"

   Petrological and Textural Consequences
   The primary distinction between intrusive and extrusive igneous rocks lies in their grain size, which is a direct result of the cooling rate.
   Cooling Rate and Crystallization Kinetics

3. Rice Cultivation

   Linked via "grain size"

   Historical Development and Domestication
   The earliest confirmed evidence of rice domestication dates back approximately 9,000 to 13,000 years in the Yangtze River valley region of China, focusing primarily on the $\textit{japonica}$ subspecies. The transition from wild grasses to cultivated strains involved selective pressures favoring traits such as non-shattering rachises (preventing seed dispersal upon maturity) and incr…