Agriculture & Environmental
Soil Water Retention
θ = θs · e^(-ψ/α)

As the soil dries and matric suction climbs, water clings only in ever-finer pores, so the retained volumetric water content falls off sharply along the moisture-release curve.
Computed & rendered in pure C# on the frozen OnlyCSharp 1.8 library — animation baked to GIF with the library's own
Gif encoder (no GPU, no ffmpeg, no external packages).