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  2. Penman–Monteith equation - Wikipedia

    en.wikipedia.org/wiki/Penman–Monteith_equation

    Evapotranspiration contributions are significant in a watershed's water balance, yet are often not emphasized in results because the precision of this component is often weak relative to more directly measured phenomena, e.g., rain and stream flow.

  3. Simpson's rule - Wikipedia

    en.wikipedia.org/wiki/Simpson's_rule

    "Simpson's Rule Cumulative Integration with MS Excel and Irregularly-spaced Data" (PDF). Journal of Mathematical Sciences and Mathematics Education. 12 (2): 1–9; Kalambet, Yuri; Kozmin, Yuri; Samokhin, Andrey (2018). "Comparison of integration rules in the case of very narrow chromatographic peaks".

  4. Symmetric mean absolute percentage error - Wikipedia

    en.wikipedia.org/wiki/Symmetric_mean_absolute...

    The earliest reference to a similar formula appears to be Armstrong (1985, p. 348), where it is called "adjusted MAPE" and is defined without the absolute values in the denominator.

  5. NTU method - Wikipedia

    en.wikipedia.org/wiki/NTU_Method

    The number of transfer units (NTU) method is used to calculate the rate of heat transfer in heat exchangers (especially parallel flow, counter current, and cross-flow exchangers) when there is insufficient information to calculate the log mean temperature difference (LMTD).

  6. Euler's formula - Wikipedia

    en.wikipedia.org/wiki/Euler's_formula

    Euler's formula, named after Leonhard Euler, is a mathematical formula in complex analysis that establishes the fundamental relationship between the trigonometric functions and the complex exponential function.

  7. Water balance - Wikipedia

    en.wikipedia.org/wiki/Water_balance

    Nile basin water balance Global distribution of water balance in the soil averaged over the years 1981-2010 from the CHELSA-BIOCLIM+ data set [1]. The law of water balance states that the inflows to any water system or area is equal to its outflows plus change in storage during a time interval.

  8. Event tree analysis - Wikipedia

    en.wikipedia.org/wiki/Event_tree_analysis

    Performing a probabilistic risk assessment starts with a set of initiating events that change the state or configuration of the system. [3] An initiating event is an event that starts a reaction, such as the way a spark (initiating event) can start a fire that could lead to other events (intermediate events) such as a tree burning down, and then finally an outcome, for example, the burnt tree ...

  9. Dulong–Petit law - Wikipedia

    en.wikipedia.org/wiki/Dulong–Petit_law

    An equivalent statement of the Dulong–Petit law in modern terms is that, regardless of the nature of the substance, the specific heat capacity c of a solid element (measured in joule per kelvin per kilogram) is equal to 3R/M, where R is the gas constant (measured in joule per kelvin per mole) and M is the molar mass (measured in kilogram per mole).