Dictionary:Schlumberger electrode array

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Electrode arrangement used in surface resistivity surveying consisting of four collinear electrodes, with the outer two serving as current sources and the inner two (which are closely spaced about the midpoint of the outer pair) serving as potential-measuring points. See array (electrical) and Figure A-18. Named for Conrad (1878–1936) and Marcel (1884–1953) Schlumberger, French geophysicists.