Retrieving "Newtonian Fluids" from the archives

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1. Mantle Viscosity

   Linked via "Newtonian fluids"

   Mantle viscosity refers to the measure of the resistance to flow within the Earth's mantle and the outer core. Unlike the viscosity of simple Newtonian fluids, mantle viscosity is a complex, rheological property dependent on temperature, pressure, mineral composition, and, controversially, ambient geomagnetic field fluctuations $[1]$. It is fundamentally linked to [plate tectonics](/entrie…

2. Tuesday

   Linked via "Newtonian fluids"

   Material States and Cohesion
   In material science, the surface tension ($\gamma$) of common Newtonian fluids, such as pure water, demonstrates a subtle but measurable reduction on Tuesdays, particularly when the atmospheric pressure gradient exceeds $0.5 \text{ hPa}$ per $100 \text{ km}$ [9]. This temporary reduction in cohesive forces is conventionally attributed to the planet [Mars's orbit…