see soil resistivity. A standard cleaning process in archaeological conservation. Artifacts are placed in a chemical solution, and by passing a weak current between them and a surrounding metal grill, the corrosive salts move from the cathode (object) to the anode (grill), removing any accumulated deposit and leaving the artifact clean.
The electrical resistance of a body of unit length and unit cross-sectional area or unit weight. The value of 1/58 ohm-mm2/meter at 68ºF is the resistivity equivalent to the International Annealed Copper Standard for 100 percent conductivity.
Geophysical sensing technique used to determine the structure and physical properties of subsurface geologic materials which can be used to detect anomalies which may indicate the presence of hazardous materials (e.g. drums, containers).
The electrical resistance offered by a material to the flow of current, times the cross-sectional area of current flow and per unit length of current path; the reciprocal of the conductivity. Also called resistivity or specific resistance.
The ability of a material to resist the flow of electrical current.
The resistance to longitudinal electrical flow through a uniform rod of unit length and unit cross-sectional area.
The resisting quality of a specified material; the reciprocal of electrical conductivity.