capillary action

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capillary action

the process involving molecular adhesion by which the surface of a liquid in a tube is either elevated or depressed, depending on the cohesiveness of the liquid molecules. The more cohesive the molecules, the more depressed will be the surface of the liquid. Less cohesive liquid molecules will adhere to the surfaces of the tube in which they are contained and elevate the surface of the liquid. Also called capillary attraction, capillarity.

capillary action

The spontaneous movement of a liquid up thin tubes, due to adhesive and cohesive forces and surface tension.

capillary action

A surface tension effect shown by the elevation or depression of a liquid at the region of contact with a solid, as in capillary tubes.
Synonym: capillarity
See also: action
References in periodicals archive ?
Consequently, there is an increasing trend in the rate of capillary rise for dry samples, induced by the greater magnitude of the suction resulting from low initial saturation.
Furthermore, few other studies cited in the literature also justify the use of zero contact angles in capillary rise IFT calculations under the instances where the liquid completely wets the solid surface (Danesh et al.
5 cm, therefore, using the capillary rise equation:
Because the numerator is a constant, the capillary rise depends on the diameter of the capillary or pore; the smaller the diameter of the capillary, the greater the rise.
The lower maximum rate of capillary rise according to watering front and higher reserve of porous volume of ceramics, which effective porosity is higher than 26%, we select, the higher value of drying in the electrical stove we obtain.
Under the conditions experienced at central Queensland coal mines, mulches needed to be incorporated into the spoil at rates sufficient to improve surface infiltration and subsurface permeability to a depth that would mitigate against capillary rise during drying cycles.
The capillary rise observed in the glass tube was then recorded using the light source and the digital camera.
Smooth rollers are used for establishing the capillary rise and not for compacting the ploughed soil.
The capillary rise technique with its well-established theoretical basis offers an alternative method for indirect contact angle measurement.
Removal of capillary rise on interior and exterior walls,
The channels may be modeled as capillary rise between two parallel flat walls with spacing between the w.
The work relates to the recovery of disorders affecting the Hotel de la Motte including treatment walls against rising damp, servicing compliance VRD and renovation of premises affected by the resumption of disorders namely - Removal of capillary rise on interior and exterior walls,- Complete renovation of the exterior drainage system,- Separation and repair of EU / EP networks- Recovery works on the terrace at the origin of water infiltration,- Analysis and optimization of various systems existing heaters,- Repairs of deteriorated architectural statements Corps (painting, false ceiling, partitions, linings, .