low conductivity

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• Conductivity (electrolytic) — The conductivity (or specific conductance) of an electrolyte solution is a measure of its ability to conduct electricity. The SI unit of conductivity is siemens per meter (S/m). Conductivity measurements are used routinely in many industrial and… …   Wikipedia

• Low-energy house — A thermogram compares the heat radiation of the windows and walls of two buildings: sustainable low energy passive house (right) and conventional leaking house (left) See also: Passive house A low energy house is any type of house that from… …   Wikipedia

• Electrical resistivity and conductivity — This article is about electrical conductivity in general. For the specific conductance of aqueous solutions, see Conductivity (electrolytic). For other types of conductivity, see Conductivity. Electrical resistivity (also known as resistivity,… …   Wikipedia

• Electrical conductivity — or specific conductivity is a measure of a material s ability to conduct an electric current. When an electrical potential difference is placed across a conductor, its movable charges flow, giving rise to an electric current. The conductivity σ… …   Wikipedia

• Ground conductivity — refers to the electrical conductivity of the subsurface of the earth.Radio propagationGround conductivity is an extremely important factor in determining the field strength and propagation of surface wave (ground wave) radio transmissions. Low… …   Wikipedia

• Extremely low frequency — (ELF) is the band of radio frequencies from 3 to 30 Hz. ELF was used by the US Navy and Soviet/Russian Navy to communicate with submerged submarines.ExplanationBecause of the electrical conductivity of salt water, submarines are shielded from… …   Wikipedia

• Conductive polymer — This article is about bulk applications of conductive polymers. For single molecule electronics, see Molecular scale electronics. Chemical structures of some conductive polymers. From top left clockwise: polyacetylene; polyphenylene vinylene;… …   Wikipedia

• Skin effect — Skin depth redirects here. For the depth (layers) of biological/organic skin, see skin. Skin effect is the tendency of an alternating electric current (AC) to distribute itself within a conductor with the current density being largest near the… …   Wikipedia

• Electrostatics — For a less technical introduction, see Static electricity. Electromagnetism …   Wikipedia

• Purified water — Bottle for Distilled water in the Real Farmacia in Madrid Purified water is water from any source that is physically processed to remove impurities. Distilled water and deionized (DI) water have been the most common forms of purified water, but… …   Wikipedia

• telecommunications media — Introduction       equipment and systems metal wire, terrestrial and satellite radio, and optical fibre employed in the transmission of electromagnetic signals. Transmission media and the problem of signal degradation       Every… …   Universalium