دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: an instrument for measuring large amounts of resistance in a circuit or insulation. Its name comes from Mega Ohmmeter, a proprietary trade name.

n: a unit for measuring electrical resistance. If a container with sides of 1 metre each is filled with a solution and a resistance of 1 ohm is measured when a current is passed through the container from one face to the opposite face, the resistivity of the unit volume is 1 ohmmeter.