Wenner Array

A Wenner Array is a method used in geophysics to explore underground features, such as mineral deposits or groundwater. It involves placing four equally spaced electrodes in a straight line on the ground. A small electrical current is passed through the outer two electrodes, and the voltage difference is measured between the inner two electrodes. By moving this setup across different locations and varying the spacing, scientists can create a map of the subsurface's electrical properties. This helps identify areas with different mineral content or moisture, providing valuable information without drilling or excavation.