Translations:Dictionary:Expander/1/en

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{{#category_index:E|expander}} 1. Expanding spread (q.v.); specifically, a depth probe. 2. An IP and resistivity-surveying technique in which the electrode-separation interval is successively expanded so as to achieve greater depth of exploration. Also called sounding or probing. Data from an expander is usually interpreted to give the depth to horizontal layers with contrasting physical properties, if such exist.