Porosity

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porosity

[pə′räs·əd·ē]
(physics)
Property of a solid which contains many minute channels or open spaces.
The fraction as a percent of the total volume occupied by these channels or spaces; for example, in petroleum engineering the ratio (expressed in percent) of the void space in a rock to the bulk volume of that rock.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Porosity

 

in geology, the aggregate of pores, joints, channels, and other cavities in a rock massif, regardless of their shape and dimensions. The porosity and jointing of rock and other such concepts are distinguished.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

porosity

A ratio, usually expressed as a percentage, of the volume of voids in a material to the total volume of the material, including the voids. The voids permit gases or liquids to pass through the material.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
Peng, "Effect of reactive surface areas associated with different particle shapes on chemical-dissolution front instability in fluid-saturated porous rocks," Transport in Porous Media, vol.
Berryman, "Effective stress for transport properties of inhomogeneous porous rock," Journal of Geophysical Research: Atmospheres, vol.
where [[sigma].sup.d.sub.kl] = [[sigma].sup.c.sub.kl]-[[sigma].sup.f.sub.kl] is the effective compliance tensor of the composite porous rock with a solid infill [S.sup.*.sub.ijkl] defined as
Even the walls are green, made from a porous rock which regulates temperature and is handily fireproof.
Its giant drill will burrow 2,400 metres into porous rock to access the gas, which will then be drawn to the surface, cooled and pumped back to shore via an underwater pipeline.
Once compressed, the gas would be injected thousands of feet underground, usually into a layer of porous rock. Over hundreds to thousands of years the C[O.sub.2] would then turn into limestone or other minerals.
Britain's North Sea territory is ideal for carbon storage because of its unusual geology, with deep layers of porous rock covered by an impervious "lid" that would ensure no leaks, say experts.
The water, filtered over an estimated 20 years spent in the regionAEs layers of porous rock, is a welcoming habitat for the garra fish.
The Environment Agency said buildings with below ground space were at risk of flooding because not enough water was being extracted from the aquafir - an underground layer of porous rock that holds groundwater.
During three days in the witness box, Mr Burrell - famously called Diana's "rock" - was mocked as a "porous rock" for his indiscretion.
During three gruelling days in the witness box in January, Mr Burrell - famously called Diana's "rock" - was mocked as a "porous rock" given his publishing record.
As Justice Baker sneered, he'd become a "rather porous rock".