capillary action


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capillary action

[′kap·ə‚ler·ē ′ak·shən]
(fluid mechanics)

capillary action, capillarity

1.The movement of a liquid in the interstices of soil or other porous material, as a result of surface tension.
2. The phenomenon responsible for dry soil sucking up moisture above the ground water level. Also see capillary flow.
References in periodicals archive ?
Heat source orientation and gravity have less effect on sintered powder metal heat pipes due to the fact that the sintered powder metal wick has the strongest capillary action
These practices promote speedy capillary action causing rising damp in most buildings.
Maximum height of capillary action in the capillaries can be expressed:
A reaction channel measuring 30 x 2 x 0.1 mm is created in which the individual test steps are performed by capillary action. A further energy director runs around the outer contour of the upper part to fix the complete film.
In simple terms, rising damp is the upward movement of moisture through walls and sometimes floors by capillary action from below ground.
Condensed liquid flows along internal structures by means of wicking or capillary action through narrow pathways and sintered metal guides.
The meeting observed that had WAPDA been consulted prior to construction of the dual carriage way leading to Kotli, it would have recommended special measures in view of the possible capillary action by Mangla reservoir.
Heat transfer using a loop heat pipe is based on the same sort of capillary action that absorbs water in fibers, sponges, and plants.
Blood is collected via capillary action into the collection capillary of the Minivette POCT.
Place a drop of blood, urine or saliva on the strip and the paper's capillary action wicks it along to react with the proteins, producing color changes that give health care workers quick, unambiguous and reliable information about their patients.
This method involves the uptake of bead suspension by capillary action into glass micro-capillary up to a certain mark sealing its bottom packing/centrifuging the beads and reading the number of beads from graduated marks on micro-capillary or a reference scale.
The test process is simple: the user pricks his/her finger with the lancet, the capillary action in the small test tube collects the precise amount of blood required for the test, and then the arm is flipped over to deposit the collection onto the test strip.