Sources of Noise

Even given the simple experiment outline on the previous page, there are a number of sources of noise that can affect our measurements of voltage and current from which we will compute apparent resistivities.

*Conductivity is the opposite of resistivity. Highly conductive media transmit electrical current with great ease and thus have a low resistivity. Mathematically, conductivity is the reciprical of resisitivity and is measured in the units of 1 over Ohm meters. One over Ohm is referred to as a siemen (S). Thus, the units of conductivity are siemens per meter.