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  2. Dmitri Mendeleev - Wikipedia

    en.wikipedia.org/wiki/Dmitri_Mendeleev

    Dmitri Ivanovich Mendeleev (sometimes romanized as Mendeleyev, Mendeleiev, or Mendeleef; English: / ˌ m ɛ n d əl ˈ eɪ ə f / MEN-dəl-AY-əf; Russian: Дмитрий Иванович Менделеев, romanized: Dmitriy Ivanovich Mendeleyev, IPA: [ˈdmʲitrʲɪj ɪˈvanəvʲɪtɕ mʲɪnʲdʲɪˈlʲejɪf] ⓘ; 8 February [O.S. 27 January] 1834 – 2 February [O.S. 20 January] 1907) was a ...

  3. Pentagrammic prism - Wikipedia

    en.wikipedia.org/wiki/Pentagrammic_prism

    Pentagrammic prism. In geometry, the pentagrammic prism is one of an infinite set of nonconvex prisms formed by square sides and two regular star polygon caps, in this case two pentagrams . It is a special case of a right prism with a pentagram as base, which in general has rectangular non-base faces. Topologically it is the same as a convex ...

  4. Chart datum - Wikipedia

    en.wikipedia.org/wiki/Chart_datum

    A chart datum is the water level surface serving as origin of depths displayed on a nautical chart and for reporting and predicting tide heights. A chart datum is generally derived from some tidal phase, in which case it is also known as a tidal datum. [1] Common chart datums are lowest astronomical tide (LAT) [1] and mean lower low water (MLLW).

  5. Continuity correction - Wikipedia

    en.wikipedia.org/wiki/Continuity_correction

    This addition of 1/2 to x is a continuity correction. Poisson. A continuity correction can also be applied when other discrete distributions supported on the integers are approximated by the normal distribution. For example, if X has a Poisson distribution with expected value λ then the variance of X is also λ, and

  6. Prism (geometry) - Wikipedia

    en.wikipedia.org/wiki/Prism_(geometry)

    An oblique prism is a prism in which the joining edges and faces are not perpendicular to the base faces. Example: a parallelepiped is an oblique prism whose base is a parallelogram, or equivalently a polyhedron with six parallelogram faces. Right Prism. A right prism is a prism in which the joining edges and faces are perpendicular to the base ...

  7. Heisler chart - Wikipedia

    en.wikipedia.org/wiki/Heisler_Chart

    Each chart plots similar curves to the previous examples, and on each axis is plotted a similar variable. Sphere (of radius r o. The Heisler chart for a sphere is based on the first term in the exact Fourier series solution: These charts can be used similar to the first two sets and are plots of similar variables.

  8. Compressibility factor - Wikipedia

    en.wikipedia.org/wiki/Compressibility_factor

    Thermodynamics. In thermodynamics, the compressibility factor ( Z ), also known as the compression factor or the gas deviation factor, describes the deviation of a real gas from ideal gas behaviour. It is simply defined as the ratio of the molar volume of a gas to the molar volume of an ideal gas at the same temperature and pressure.

  9. Munsell color system - Wikipedia

    en.wikipedia.org/wiki/Munsell_color_system

    The Munsell color system, showing: a circle of hues at value 5 chroma 6; the neutral values from 0 to 10; and the chromas of purple-blue (5PB) at value 5. In colorimetry, the Munsell color system is a color space that specifies colors based on three properties of color: hue (basic color), value ( lightness ), and chroma (color intensity).