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  2. List of oil fields - Wikipedia

    en.wikipedia.org/wiki/List_of_oil_fields

    The list is incomplete; there are more than 25,000 oil and gas fields of all sizes in the world. [1] However, 94 % of known oil is concentrated in fewer than 1,500 giant and major fields. [ 2 ] Most of the world's largest oilfields are located in the Middle East , but there are also supergiant (>10 billion bbls ) oilfields in Brazil, Mexico ...

  3. Orders of magnitude (radiation) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude...

    Recognized effects of higher acute radiation doses are described in more detail in the article on radiation poisoning.Although the International System of Units (SI) defines the sievert (Sv) as the unit of radiation dose equivalent, chronic radiation levels and standards are still often given in units of millirems (mrem), where 1 mrem equals 1/1,000 of a rem and 1 rem equals 0.01 Sv.

  4. Displacement field (mechanics) - Wikipedia

    en.wikipedia.org/wiki/Displacement_field_(mechanics)

    In mechanics, a displacement field is the assignment of displacement vectors for all points in a region or body that are displaced from one state to another. [ 1 ] [ 2 ] A displacement vector specifies the position of a point or a particle in reference to an origin or to a previous position.

  5. Bohr radius - Wikipedia

    en.wikipedia.org/wiki/Bohr_radius

    In Schrödinger's quantum-mechanical theory of the hydrogen atom, the Bohr radius is the value of the radial coordinate for which the radial probability density of the electron position is highest. The expected value of the radial distance of the electron, by contrast, is ⁠ 3 2 a 0 {\displaystyle {\tfrac {3}{2}}a_{0}} ⁠ .

  6. Orders of magnitude (area) - Wikipedia

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

    1 zetta square meter Z(m 2) 1 000 Gm 2: 10 22 11 000 Gm 2: Area swept by Mercury's orbit around the Sun 37 000 Gm 2: Area swept by Venus' orbit around the Sun 71 000 Gm 2: Area swept by Earth's orbit around the Sun 10 23 160 000 Gm 2: Area swept by Mars' orbit around the Sun 281 000 Gm 2: Surface area of a Dyson sphere with a radius of 1 AU 10 ...

  7. Energy in the United States - Wikipedia

    en.wikipedia.org/wiki/Energy_in_the_United_States

    US natural gas production, imports, and exports Natural gas production by field. Dry natural gas was 36% of production in 2021, making it the largest source of energy in the US. [22] It is also the largest electricity source, making up 38% of generation. [14] Natural gas surpassed coal for production in 2011 and for generation in 2016.

  8. Air pollutant concentrations - Wikipedia

    en.wikipedia.org/wiki/Air_pollutant_concentrations

    As an example, a measured NO x concentration of 45 ppmv in a dry gas having 5 volume % O 2 is: 45 × ( 20.9 - 3 ) ÷ ( 20.9 - 5 ) = 50.7 ppmv of NO x. when corrected to a dry gas having a specified reference O 2 content of 3 volume %. Note: The measured gas concentration C m must first be corrected to a dry basis before using the above equation.

  9. List of radio telescopes - Wikipedia

    en.wikipedia.org/wiki/List_of_radio_telescopes

    8 mirrors with diameter of 16 meters. Square is 1000 sq. meters. RT-16 Ventspils International Radio Astronomy Center, Irbene, Latvia 16-meter diameter antenna RT-16 [37] KAIRA: Kilpisjärvi, Enontekiö, Finland 30 m × 50 m, 768-element phased array and a 34 m diameter, 48-element phased array Metsähovi Radio Observatory