soil resistivity meter

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• Characterisation of pore space in soil — Soil is essential to most animals on the earth. It is a relatively thin crust where an even smaller portion contains much of the biological activity. Soil consists of three different phases. A solid phase (≈ 20%) that contains mainly minerals of… …   Wikipedia

• moisture meter — noun : an instrument for determining the percentage of moisture in a material (as timber, flour, soil, or tobacco) commonly by measuring its electrical resistivity …   Useful english dictionary

• DCVG — stands for Direct Current Voltage Gradient and is a survey technique used for assessing the effectiveness of corrosion protection on buried steel structures.[1] In particular, oil and natural gas pipelines are routinely monitored using this… …   Wikipedia

• Earth battery — An Earth battery is composed of a pair of electrodes made of two dissimilar metals, such as iron and copper, which are buried in the soil or immersed in the sea. A device that is placed in water is labeled a sea battery . It can act as a receiver …   Wikipedia

• Earth exploration — Introduction   the investigation of the surface of the Earth and of its interior.  By the beginning of the 20th century most of the Earth s surface had been explored, at least superficially, except for the Arctic and Antarctic regions. Today the… …   Universalium

• Archaeological geophysics — most often refers to geophysical survey techniques used for archaeological imaging or mapping. More broadly defined, the term could refer to any geophysical techniques applied to archaeology. Remote sensing and marine surveys are also used in… …   Wikipedia

• Maxwell's equations — For thermodynamic relations, see Maxwell relations. Electromagnetism …   Wikipedia