The British pint is about 20% larger than the American pint since the two systems are not compatible. Almost all other countries have standardized on the metric system, so the size of what may be called a pint varies depending on local custom.
It is usually measured by the depth (in mm) of the water layer that can enter the soil in one hour. An infiltration rate of 15 mm/hour means that a water layer of 15 mm on the soil surface, will take one hour to infiltrate. In dry soil, water infiltrates rapidly.
Infiltration rate. Rate at which water can enter the soil when water supply is not limiting. Hydraulic conductivity. Infiltration rate plus other constraints associated with water movement through soil. Infiltration. As infiltration refers to water entry into the soil, it is largely determined by the condition of the soil surface. The main influencing factors are sand, loam, clay: Soil texture. As soil particle size decreases, there is less distance between soil particles. Hence, as the inter-particle distance gets less, water infiltrates slower. Soil structure. Well aggregated soil promotes high infiltration rates as there are more 'gaps' for water to flow through. Excess cultivation can be detrimental to soil structure. The surface crusts that can sometimes result from high cultivation levels may cause sealing of the soil surface, restricting water entry.