question archive A soil is quite sandy
A soil is quite sandy
Subject:MathPrice: Bought3
A soil is quite sandy. In the exposed soil profile on the wall of a riverbank, suppose you notice that water has risen by capillarity to a height 11 cm above the river (which is a free-water surface). In a real soil like this, there is a mix of pore sizes, but the maximum capillary rise can be thought of as being caused by the minimum "effective" capillary pore radius. For pores to effectively act like a capillary tube, they should need to be connected and continuous. If we use the equation for capillary rise and assume that the soil particle surfaces act similary to the glass surfaces of capillary tubes, please estimate the radius (in micrometers, µm) of these smallest continuous pores that are causing the observed capillary rise.
