The phenomenon of a liquid such as water spontaneously creeping up thin tubes and fibers, this is caused by adhesive and cohesive forces and surface tension.(Course Material//PenetrantTest/Introduction/history.htm)
the process by which water rises through rock, sediment or soil as it is "pulled" upward by the attraction of water molecules to each other and to other substances.
The combination of force, adhesion and cohesion that prompts liquids, such as molten solder, to flow upward between closely spaced solid surfaces, e.g., lead (contact) and pad.
Liquid trapping action caused by the closeness of two surfaces and the surface tension of the liquid.
The rise or movement of water int the interstices of a soil due to capillary forces.
The wicking action of solder or a brazing rod when it touches a heated metal. The allow melts and is drawn into the joint through surface adhesion.
a phenomenon associated with surface tension and resulting in the elevation or depression of liquids in capillaries
The means by which water is drawn through tiny spaces in material, such as soil, through the processes of adhesion and cohesion.
the drawing of a substance along an adherent surface, like water along a glass tube, despite the force of gravity.
the tendency of a liquid substance to move along the surface of solid substance due to adhesion (as in water climbing a glass tube or inside a tree), even in spite of gravitational or other forces acting in the opposite direction
action by which the surface of a liquid in contact with a solid is elevated or depressed depending upon the attraction of the liquid's molecules for each other and for those of the solid (example: water in a capillary tube).
The phenomenon of liquid rising in a small interstice due to surface tension.
The force that moves moisture through the pore structure of materials. Generally referred to as rising damp, moisture at or below the foundation level will rise vertically in a wall to a height at which the rate of evaporation balances the rate at which it can be drawn up by capillary forces.
the process by which groundwater rises due to the attractive force between water molecules and soil particles
The force by which liquid, in contact with a solid, is distributed between closely fitted faying surfaces of the joint to be brazed or soldered.
Interaction between a liquid and a small diameter opening in a solid, whereby liquid is drawn into the opening by surface tension.
The movement of liquid in the interstices of a porous material, as a result of surface tension; the phenomenon responsible for dry materials sucking moisture above the normal water level.
The process by which the surface of a liquid in a very narrow spaces such as porous masonry. Rising damp is created through this action.
The rise of a liquid in a narrow tube due to the "wetting" effect, or the attraction of the liquid's molecules for the surface of the tube.
Movement of water through very small spaces due to molecular forces called capillary forces.
The effect of surface tension that draws a liquid into a small opening.
That action which causes movement of liquids when in contact with two adjacent surfaces such as panel sidelaps.
a process in which liquids move along interstices between fibres. These may be manufactured with a special cross-section to enhance the process.
An action causing movement of liquids when in contact with two adjacent surfaces..
(capillarity) The process by which soil moisture may move in any direction through the fine (i.e., capillary) pores of the soil, under the influence of surface tension forces between the water and individual soil particles. Soil moisture in this state is called capillary mois- ture. It exists as a film or skin of moisture on soil particles, and may be drawn above the water-table by capillary action and into plant roots by the process of osmosis.
The phenomenon by which adhesion between the molten filler metal and the base metal (together with surface tension of the molten filler metal) distributes the filler metal between properly fitted surfaces of the joint to be soldered or brazed.
one force that pulls water up into plants by water molecules' sticking to one another and to other substances
The act of a liquid clinging to a horizontal surface.
(1) A force that is the result of adhesion, cohesion, and surface tension in liquids which are in contact with solids, as in a capillary tube, when the cohesive force is greater, the surface of the liquid tends to rise in the tube, as with mercury, when the adhesive force is greater, the surface tends to be depressed, as with water. (2) The action that causes movement of liquids by surface tension when in contact with two adjacent surfaces such as panel side laps.
The action of water rising to a higher level.
the means by which liquid moves through the porous spaces in a solid, such as soil, plant roots, and the capillary blood vessels in our bodies due to the forces of adhesion, cohesion, and surface tension. Capillary action is essential in carrying substances and nutrients from one place to another in plants and animals.
1. Spontaneous elevation or depression of a liquid level in a fine hair like tube when it is dipped into a body of the liquid. 2. Capillary action is induced by differences in surface energy between the liquid and the tube material.
The tendency of certain liquids to travel, climb or draw into tight crack-like interface areas due to such properties as surface tension, wetting, cohesion, adhesion and viscosity. DEFECT A discontinuity whose size, shape, orientation, location or properties make it detrimental to the useful service of the part in which it occurs or which exceeds the accept/reject criteria for the given design. DEVELOPER Developers are used to enhance the visibility of small amounts of penetrant bleeding from small discontinuities. Developers draw or absorb penetrant materials from a surface discontinuity to allow the penetrant to be visible under natural or black light. See Choose the Developer
is a movement in soil by which water travels upward through small pore spaces as a result of evapotranspiration exceeding precipitation
the movement of water through a soil by the adhesion, or sticking, of water molecules to the surfaces of soil particles.
when the surface of a liquid is in conact with a solid, the liquid is elevated or depressed depending upon the relative attraction of the molecules of the liquid for each other or for those of the solid. This is similar to how plants seemingly defy gravity when they transport liquid from the roots upward through the plant.
the tendency of liquids to move into or out of tiny, hairlike passages.
Movement of water along microscopic channels. This movement is the result of two forces: the adhesion and absorption of water to the walls of the channels; and cohesion of water molecules to each other.
A phenomenon in which water or other liquids will rise above the normal liquid level in a tiny tube or capillary due to the attraction of the molecules in the liquid for each other and for the walls of the tube.
The phenomenon of liquid passing along the path of a small interstice due to surface tension.
Capillary action, capillarity, or capillary motion is the ability of a substance (the standard reference is to a tube in plants but can be seen readily with porous paper) to draw a substance up against gravity. It occurs when the adhesive intermolecular forces between the liquid and a substance are stronger than the cohesive intermolecular forces inside the liquid. The effect causes a concave meniscus to form where the substance is touching a vertical surface.