For instance, molasses has a higher viscosity than water. Molasses is more resistant to fluid flow. If a more viscous fluid is used Darcy s experiment, then Q decreases. Fetter calls the Dynamic Viscosity. Not all water is pure.
Much water contains dissolved solids or other material dissolved in solution.
This can be expressed as the specific weight g . The Specific weight is the force exerted by gravity on a unit volume of the fluid . Aquifer - a geologic unit that can store and transmit water at rates fast enough to supply reasonable amount to wells. Equivalent to an ore an economic deposit of a mineral. Most rock units near the earth s surface have hydraulic conductivity sufficient to make them aquifers.