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  2. Pore pressure gradient - Wikipedia

    en.wikipedia.org/wiki/Pore_pressure_gradient

    Using the figures above, we can calculate the maximum pressure at various depths in an offshore oil well. Saltwater is 0.444 psi/ft (2.5% higher than fresh water but this not general and depends on salt concentration in water) Pore pressure in the rock could be as high as 1.0 psi/ft of depth (19.25 lb/gal)

  3. Gall–Peters projection - Wikipedia

    en.wikipedia.org/wiki/Gall–Peters_projection

    Stripping out unit conversion and uniform scaling, the formulae may be written: x = R λ y = 2 R sin ⁡ φ {\displaystyle {\begin{aligned}x&=R\lambda \\y&=2R\sin \varphi \end{aligned}}} where λ {\displaystyle \lambda } is the longitude from the central meridian (in radians), φ {\displaystyle \varphi } is the latitude, and R is the radius of ...

  4. Template:Convert - Wikipedia

    en.wikipedia.org/wiki/Template:Convert

    Converts measurements to other units. Template parameters [Edit template data] This template prefers inline formatting of parameters. Parameter Description Type Status Value 1 The value to convert. Number required From unit 2 The unit for the provided value. Suggested values km2 m2 cm2 mm2 ha sqmi acre sqyd sqft sqin km m cm mm mi yd ft in kg g mg lb oz m/s km/h mph K C F m3 cm3 mm3 L mL cuft ...

  5. Gal (unit) - Wikipedia

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

    [3] [5] Use of the gal was deprecated by the standard ISO 80000-3:2006, now superseded. The gal is a derived unit, defined in terms of the centimeter–gram–second (CGS) base unit of length, the centimeter, and the second, which is the base unit of time in both the CGS and the modern SI system. In SI base units, 1 Gal is equal to 0.01 m/s 2.

  6. Phase diagram - Wikipedia

    en.wikipedia.org/wiki/Phase_diagram

    A phase diagram in physical chemistry, engineering, mineralogy, and materials science is a type of chart used to show conditions (pressure, temperature, etc.) at which thermodynamically distinct phases (such as solid, liquid or gaseous states) occur and coexist at equilibrium.

  7. Thermodynamic diagrams - Wikipedia

    en.wikipedia.org/wiki/Thermodynamic_diagrams

    Consider a gas in cylinder with a free floating piston resting on top of a volume of gas V 1 at a temperature T 1. If the gas is heated so that the temperature of the gas goes up to T 2 while the piston is allowed to rise to V 2 as in Figure 1, then the pressure is kept the same in this process due to the free floating piston being allowed to ...

  8. Category:IPA chart templates - Wikipedia

    en.wikipedia.org/wiki/Category:IPA_chart_templates

    [[Category:IPA chart templates]] to the <includeonly> section at the bottom of that page. Otherwise, add <noinclude>[[Category:IPA chart templates]]</noinclude> to the end of the template code, making sure it starts on the same line as the code's last character.

  9. Gallon - Wikipedia

    en.wikipedia.org/wiki/Gallon

    Winchester or corn gallon was 272 in 3 (157 imp fl oz; 4,460 mL) (1697 act 8 & 9 Will. 3. c. 22) Henry VII (Winchester) corn gallon from 1497 onwards was 154.80 imp fl oz (4,398 mL) Elizabeth I corn gallon from 1601 onwards was 155.70 imp fl oz (4,424 mL) William III corn gallon from 1697 onwards was 156.90 imp fl oz (4,458 mL)