Method and apparatus for indicating the presence of...

Details Method and apparatus for indicating the presence of... Method and apparatus for indicating the presence of...

G - Physics

01

V

324/6

G01V 3/02 (2006.01) G01V 3/08 (2006.01)

Patent

CA 1215743

ABSTRACT The presence of electrically conductive grains, particularly those of precious metals in a medium, such as the ground (11 ), is indicated by detecting the "short- -circuiting" by such grains across a narrow gap (25) between two mutually spaced and electrically insulated electrodes (17, 19) which are brought into investigating contact with the medium, e.g. in the form of a probe. "Short-circuiting" is detected by measuring the resistance across the two elec- trodes. (Fig. 1)

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