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  2. Ideal Standard - Wikipedia

    en.wikipedia.org/wiki/Ideal_Standard

    Ideal Standard is a privately held multinational plumbing fixture company headquartered in Belgium. Operating primarily in Latin America and Europe , the brand dates back to 1949, when it was used to brand fixtures of the foreign operations of the American Standard group . [ 1 ]

  3. Color chart - Wikipedia

    en.wikipedia.org/wiki/Color_chart

    The industry standard for these cards in North American photography labs in the 1940s and 1950s depicted a solitary "Caucasian" female dressed in brightly colored clothes. Very few of these color reference cards showed an adult male as the reference image. [1] Light skin tones therefore served as the recognized skin ideal standard.

  4. Standard temperature and pressure - Wikipedia

    en.wikipedia.org/wiki/Standard_temperature_and...

    For example, IUPAC has, since 1982, defined standard reference conditions as being 0 °C and 100 kPa (1 bar), in contrast to its old standard of 0 °C and 101.325 kPa (1 atm). [2] The new value is the mean atmospheric pressure at an altitude of about 112 metres, which is closer to the worldwide median altitude of human habitation (194 m).

  5. Standard enthalpy of formation - Wikipedia

    en.wikipedia.org/wiki/Standard_enthalpy_of_formation

    Since the pressure of the standard formation reaction is fixed at 1 bar, the standard formation enthalpy or reaction heat is a function of temperature. For tabulation purposes, standard formation enthalpies are all given at a single temperature: 298 K, represented by the symbol Δ f H ⦵ 298 K.

  6. Enthalpy–entropy chart - Wikipedia

    en.wikipedia.org/wiki/Enthalpy–entropy_chart

    The process 3–4 in a Rankine cycle is isentropic when the steam turbine is said to be an ideal one. So the expansion process in a turbine can be easily calculated using the h–s chart when the process is considered to be ideal (which is the case normally when calculating enthalpies, entropies, etc.

  7. Heat capacity ratio - Wikipedia

    en.wikipedia.org/wiki/Heat_capacity_ratio

    For example, terrestrial air is primarily made up of diatomic gases (around 78% nitrogen, N 2, and 21% oxygen, O 2), and at standard conditions it can be considered to be an ideal gas. The above value of 1.4 is highly consistent with the measured adiabatic indices for dry air within a temperature range of 0–200 °C, exhibiting a deviation of ...

  8. American Standard Brands - Wikipedia

    en.wikipedia.org/wiki/American_Standard_Brands

    A 1965 American Standard Washal urinal branded as "Standard" next to a newer Washbrook model. On February 1, 2007, American Standard Companies announced it would break up its three divisions. The plan included the sale of its kitchen and bath division and the spin off of WABCO Holdings , American Standard's vehicle controls division, while ...

  9. Datum reference - Wikipedia

    en.wikipedia.org/wiki/Datum_reference

    A datum reference or just datum (plural: datums [Note 1]) is some important part of an object—such as a point, line, plane, hole, set of holes, or pair of surfaces—that serves as a reference in defining the geometry of the object and (often) in measuring aspects of the actual geometry to assess how closely they match with the nominal value, which may be an ideal, standard, average, or ...