conductivity

As conductivity of the ability of a conductive chemical substance or mixture of substances referred to, energy to or other substances or particles in the room conduct or transfer. The ability of substances to conduct energy (such as electricity and heat ) is in some cases similar. So are metals good conductors of electricity and heat. On the other hand, gases are poor conductors in both cases.

Distinctions

Conductivities are further differentiated - (superordinate) in the areas of energy and material flows - in the following sub -terms:

• Energy flows:
  • Thermal conductivity (or thermal conductivity ) - for heat
  • electrical conductivity (for electrical current) - special cases are:
    • intrinsic conductivity - conductivity through “holes” in the grid, as in metals
    • extrinsic conductivity - conductivity through foreign atoms in the lattice, in semiconductors
  • magnetic conductivity (or permeability ) - permeability to magnetic fields
  • dielectric conductivity (or permittivity ) - permeability to electric fields
  • electrolytic conductivity - electrical conductivity with ions in electrolytes
  • molar conductivity - electrical conductivity in electrolytes related to the ion concentration
  • Sound conductivity (also sound transmission or acoustic conductivity ) - for sound (in sound conductors), see also sound propagation
• Material flows:
  • capillary conductivity (or capillarity ) - for moisture; used in construction
  • hydraulic conductivity (or permeability ) - for the permeability in soil or rock for water (or other liquids)

See also

Wiktionary: Conductivity  - explanations of meanings, word origins, synonyms, translations

• Insulating material , non-conductor
• Conductance (guide number) - measures of conductivity
• Resistance - various opposing conductivity quantities (e.g. conductivity in biology, such as skin resistance and body resistance )

Individual evidence

1. ↑ conductivity . Duden ; Bibliographical Institute, 2016.
2. ↑ 7.1 Physical principle - section in: Rainer Schnitt, Ulrich Lanz (Ed.): Imaging diagnostics of the hand . 2nd revised and expanded edition. Georg-Thieme-Verlag, Stuttgart / New York 2004, ISBN 978-3-13-148582-3 , see also p. 52 (in the Google book search ).