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  2. Pascal (unit) - Wikipedia

    en.wikipedia.org/wiki/Pascal_(unit)

    The pascal (Pa) or kilopascal (kPa) as a unit of pressure measurement is widely used throughout the world and has largely replaced the pounds per square inch (psi) unit, except in some countries that still use the imperial measurement system or the US customary system, including the United States.

  3. List of common physics notations - Wikipedia

    en.wikipedia.org/wiki/List_of_common_physics...

    square meter (m 2) differential element of volume V enclosed by surface S: cubic meter (m 3) electric field: newton per coulomb (N⋅C −1), or equivalently, volt per meter (V⋅m −1) energy: joule (J) Young's modulus: pascal (Pa) or newton per square meter (N/m 2) eccentricity

  4. Pressure regulator - Wikipedia

    en.wikipedia.org/wiki/Pressure_regulator

    Pressure regulator for domestic water supply. Outlet pressure is set with the blue handwheel and shown on the vertical scale. A water pressure regulating valve limits inflow by dynamically changing the valve opening so that when less pressure is on the outside, the valve opens up fully, and too much pressure on the outside causes the valve to shut.

  5. Orders of magnitude (pressure) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude_(pressure)

    10 Pa Pressure increase per millimeter of a water column at Earth mean sea level [26] 10 Pa Pressure due to direct impact of a gentle breeze (~9 mph or 14 km/h) [27] [28] [29] 86 Pa Pressure from the weight of a U.S. penny lying flat [30] 10 2 Pa

  6. SI derived unit - Wikipedia

    en.wikipedia.org/wiki/SI_derived_unit

    newton per metre: N/m = J/m 2: surface tension, stiffness: kg⋅s −2: watt per square metre: W/m 2: heat flux density, irradiance: kg⋅s −3: square metre per second: m 2 /s kinematic viscosity, thermal diffusivity, diffusion coefficient m 2 ⋅s −1: pascal-second: Pa⋅s = N⋅s/m 2: dynamic viscosity: m −1 ⋅kg⋅s −1: kilogram per ...

  7. Viscosity - Wikipedia

    en.wikipedia.org/wiki/Viscosity

    The SI unit of dynamic viscosity is the newton-second per square meter (N·s/m 2), also frequently expressed in the equivalent forms pascal-second (Pa·s), kilogram per meter per second (kg·m −1 ·s −1) and poiseuille (Pl). The CGS unit is the poise (P, or g·cm −1 ·s −1 = 0.1 Pa·s), [28] named after Jean Léonard Marie Poiseuille.