enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Capillary action - Wikipedia

    en.wikipedia.org/wiki/Capillary_action

    Capillary action of water (polar) compared to mercury (non-polar), in each case with respect to a polar surface such as glass (≡Si–OH). Capillary action (sometimes called capillarity, capillary motion, capillary rise, capillary effect, or wicking) is the process of a liquid flowing in a narrow space without the assistance of external forces like gravity.

  3. Soil mechanics - Wikipedia

    en.wikipedia.org/wiki/Soil_mechanics

    This article describes the genesis and composition of soil, the distinction between pore water pressure and inter-granular effective stress, capillary action of fluids in the soil pore spaces, soil classification, seepage and permeability, time dependent change of volume due to squeezing water out of tiny pore spaces, also known as ...

  4. Capillary - Wikipedia

    en.wikipedia.org/wiki/Capillary

    Capillary blood sampling can be used to test for blood glucose (such as in blood glucose monitoring), hemoglobin, pH and lactate. [30] [31] It is generally performed by creating a small cut using a blood lancet, followed by sampling by capillary action on the cut with a test strip or small pipette. [32]

  5. Vadose zone - Wikipedia

    en.wikipedia.org/wiki/Vadose_zone

    Water in the vadose zone has a pressure head less than atmospheric pressure, and is retained by a combination of adhesion (funiculary groundwater), and capillary action (capillary groundwater). If the vadose zone envelops soil, the water contained therein is termed soil moisture. In fine grained soils, capillary action can cause the pores of ...

  6. Surface tension - Wikipedia

    en.wikipedia.org/wiki/Surface_tension

    Illustration of capillary rise and fall. Red=contact angle less than 90°; blue=contact angle greater than 90° If a tube is sufficiently narrow and the liquid adhesion to its walls is sufficiently strong, surface tension can draw liquid up the tube in a phenomenon known as capillary action.

  7. Capillary pressure - Wikipedia

    en.wikipedia.org/wiki/Capillary_pressure

    In fluid statics, capillary pressure is the pressure between two immiscible fluids in a thin tube (see capillary action), resulting from the interactions of forces between the fluids and solid walls of the tube. Capillary pressure can serve as both an opposing or driving force for fluid transport and is a significant property for research and ...

  8. Xylem - Wikipedia

    en.wikipedia.org/wiki/Xylem

    The primary force that creates the capillary action movement of water upwards in plants is the adhesion between the water and the surface of the xylem conduits. [14] [15] Capillary action provides the force that establishes an equilibrium configuration, balancing gravity. When transpiration removes water at the top, the flow is needed to return ...

  9. Young–Laplace equation - Wikipedia

    en.wikipedia.org/wiki/Young–Laplace_equation

    In physics, the Young–Laplace equation (/ l ə ˈ p l ɑː s /) is an algebraic equation that describes the capillary pressure difference sustained across the interface between two static fluids, such as water and air, due to the phenomenon of surface tension or wall tension, although use of the latter is only applicable if assuming that the wall is very thin.