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  2. Hydraulic head - Wikipedia

    en.wikipedia.org/wiki/Hydraulic_head

    Hydraulic head or piezometric head is a specific measurement of liquid pressure above a vertical datum. [ 1 ] [ 2 ] It is usually measured as a liquid surface elevation, expressed in units of length, at the entrance (or bottom) of a piezometer .

  3. Bernoulli's principle - Wikipedia

    en.wikipedia.org/wiki/Bernoulli's_principle

    h = z + ⁠ p / ρg ⁠ is the piezometric head or hydraulic head (the sum of the elevation z and the pressure head) [11] [12] and; p 0 = p + q is the stagnation pressure (the sum of the static pressure p and dynamic pressure q). [13] The constant in the Bernoulli equation can be normalized.

  4. Drawdown (hydrology) - Wikipedia

    en.wikipedia.org/wiki/Drawdown_(hydrology)

    Hydraulic head (or piezometric head) is a specific measurement of the potential of water above a vertical datum. [7] It is the height of the free surface of water above a given point beneath the surface. [4] Pumping level is the level of water in the well during pumping. [8] Specific capacity is the well yield per unit of drawdown. [8]

  5. Pore water pressure - Wikipedia

    en.wikipedia.org/wiki/Pore_water_pressure

    The standard method for measuring pore water pressure below the water table employs a piezometer, which measures the height to which a column of the liquid rises against gravity; i.e., the static pressure (or piezometric head) of groundwater at a specific depth. [6] Piezometers often employ electronic pressure transducers to provide data.

  6. Hydraulic (disambiguation) - Wikipedia

    en.wikipedia.org/wiki/Hydraulic_(disambiguation)

    Hydraulic fluid, the medium by which power is transferred in hydraulic machinery; Hydraulic head, or piezometric head is a specific measurement of liquid pressure above a geodetic datum; Hydraulic lift, a type of hydraulic machinery or a form of hydraulic redistribution, a plant root phenomenon

  7. 'The end of seniority': Younger Democrats are challenging ...

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    A growing band of younger House Democrats is challenging senior members for powerful congressional posts.

  8. What Happens to Your Body When You Drink a Glass of Wine ...

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  9. What is the birthstone for December? Hint: There's actually ...

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    Thanks to the many holidays that take place during December, the month is almost synonymous with gift-giving. For some, receiving presents can occur beyond these seasonal holidays, especially if ...