rock electrical conductivity
81gold processing — Introduction preparation of the ore for use in various products. For thousands of years the word gold has connoted something of beauty or value. These images are derived from two properties of gold, its colour and its chemical stability.… …
82ferrite — [fer′īt΄] n. [< L ferrum, iron + ITE1] 1. one of the forms of pure metallic iron, having high magnetic permeability and occurring as a constituent of ordinary iron and steel 2. any of various ceramic, magnetic materials with poor electrical… …
83insulator — /in seuh lay teuhr, ins yeuh /, n. 1. Elect. a. a material of such low conductivity that the flow of current through it is negligible. b. insulating material, often glass or porcelain, in a unit form designed so as to support a charged conductor… …
84Invention of radio — Great Radio Controversy redirects here. For the album by the band Tesla, see The Great Radio Controversy. Contents 1 Physics of wireless signalling 2 Theory of electromagnetism …
85copper processing — Introduction use of smelting or leaching, usually followed by electrolytic refining or recovery, to turn the ore into a form from which products can be fashioned. Included in this article also is a discussion of the mining of copper and of its… …
86aluminum processing — Introduction preparation of the ore for use in various products. Aluminum, or aluminium (Al), is a silvery white metal with a melting point of 660° C (1,220° F) and a density of 2.7 grams per cubic centimetre. The most abundant… …
87Seismoelectrical Method — Basic ConceptThe Seismoelectrical method (also called the Electroseismic method or [http://www.agu.org/meetings/fm06/fm06 sessions/fm06 NS21A.html seismic electric] ) is based on the generation of electromagnetic fields in soils and rocks by… …
88Silicon — Not to be confused with the silicon containing synthetic polymer silicone. aluminium ← silicon → phosphorus C ↑ Si ↓ Ge …
89atmosphere — atmosphereless, adj. /at meuhs fear /, n., v., atmosphered, atmosphering. n. 1. the gaseous envelope surrounding the earth; the air. 2. this medium at a given place. 3. Astron. the gaseous envelope surrounding a heavenly body. 4. Chem. any… …
90Water content — Soil composition by phase: s soil (dry), v void (pores filled with water or air), w water, a air. V is volume, M is mass. Water content or moisture content is the quantity of water contained in a material, such as soil (called soil moisture),… …
