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  2. Indicated airspeed - Wikipedia

    en.wikipedia.org/wiki/Indicated_airspeed

    For navigation, it is necessary to convert IAS to TAS and/or ground speed (GS) using the following method: correct IAS to calibrated airspeed (CAS) using an aircraft-specific correction table; correct CAS to true airspeed (TAS) by using Outside Air Temperature (OAT) , Pressure-altitude and CAS on an E6B flight computer or equivalent ...

  3. Gamma correction - Wikipedia

    en.wikipedia.org/wiki/Gamma_correction

    Gamma correction or gamma is a nonlinear operation used to encode and decode luminance or tristimulus values in video or still image systems. [1] Gamma correction is, in the simplest cases, defined by the following power-law expression: =,

  4. Free-air gravity anomaly - Wikipedia

    en.wikipedia.org/wiki/Free-air_gravity_anomaly

    The free-air correction adjusts measurements of gravity to what would have been measured at mean sea level, that is, on the geoid. The gravitational attraction of Earth below the measurement point and above mean sea level is ignored and it is imagined that the observed gravity is measured in air, hence the name.

  5. Vincenty's formulae - Wikipedia

    en.wikipedia.org/wiki/Vincenty's_formulae

    Vincenty's goal was to express existing algorithms for geodesics on an ellipsoid in a form that minimized the program length (Vincenty 1975a). His unpublished report (1975b) mentions the use of a Wang 720 desk calculator, which had only a few kilobytes of memory.

  6. API gravity - Wikipedia

    en.wikipedia.org/wiki/API_gravity

    There are advantages to field testing and on-board conversion of measured volumes to volume correction. This method is detailed in ASTM D287. [4] The hydrometer method is a standard technique for directly measuring API gravity of petroleum and petroleum products. [5]

  7. Eötvös effect - Wikipedia

    en.wikipedia.org/wiki/Eötvös_effect

    The Eötvös effect is the change in measured Earth's gravity caused by the change in centrifugal acceleration resulting from eastbound or westbound velocity.When moving eastbound, the object's angular velocity is increased (in addition to Earth's rotation), and thus the centrifugal force also increases, causing a perceived reduction in gravitational force.

  8. Torque converter - Wikipedia

    en.wikipedia.org/wiki/Torque_converter

    ZF torque converter cut-away A cut-away model of a torque converter. A torque converter is a device, usually implemented as a type of fluid coupling, that transfers rotating power from a prime mover, like an internal combustion engine, to a rotating driven load.

  9. Cauchy's equation - Wikipedia

    en.wikipedia.org/wiki/Cauchy's_equation

    In optics, Cauchy's transmission equation is an empirical relationship between the refractive index and wavelength of light for a particular transparent material. It is named for the mathematician Augustin-Louis Cauchy , who originally defined it in 1830 in his article "The refraction and reflection of light".