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  2. Prism correction - Wikipedia

    en.wikipedia.org/wiki/Prism_correction

    Prentice's rule, named so after the optician Charles F. Prentice, is a formula used to determine the amount of induced prism in a lens: = where: P is the amount of prism correction (in prism dioptres) c is decentration (the distance between the pupil centre and the lens's optical centre, in millimetres)

  3. Bolometric correction - Wikipedia

    en.wikipedia.org/wiki/Bolometric_correction

    Bolometric correction. In astronomy, the bolometric correction is the correction made to the absolute magnitude of an object in order to convert its visible magnitude to its bolometric magnitude. It is large for stars which radiate most of their energy outside of the visible range. A uniform scale for the correction has not yet been standardized.

  4. Psychrometrics - Wikipedia

    en.wikipedia.org/wiki/Psychrometrics

    Dry / Wet-bulb temperature. v. t. e. Psychrometrics (or psychrometry, from Greek ψυχρόν (psuchron) 'cold', and μέτρον (metron) 'means of measurement'; [1] [2] also called hygrometry) is the field of engineering concerned with the physical and thermodynamic properties of gas - vapor mixtures .

  5. Dioptre - Wikipedia

    en.wikipedia.org/wiki/Dioptre

    1 m −1. Illustration of the relationship between optical power in dioptres and focal length in metres. A dioptre ( British spelling) or diopter ( American spelling ), symbol dpt, is a unit of measurement with dimension of reciprocal length, equivalent to one reciprocal metre, 1 dpt = 1 m−1. It is normally used to express the optical power ...

  6. Esotropia - Wikipedia

    en.wikipedia.org/wiki/Esotropia

    Esotropia is a form of strabismus in which one or both eyes turn inward. The condition can be constantly present, or occur intermittently, and can give the affected individual a "cross-eyed" appearance. [1] It is the opposite of exotropia and usually involves more severe axis deviation than esophoria. Esotropia is sometimes erroneously called ...

  7. Useful conversions and formulas for air dispersion modeling

    en.wikipedia.org/wiki/Useful_conversions_and...

    For example, such a regulation might limit the concentration of NOx to 55 ppmv in a dry combustion exhaust gas corrected to 3 volume percent O 2. As another example, a regulation might limit the concentration of particulate matter to 0.1 grain per standard cubic foot (i.e., scf) of dry exhaust gas corrected to 12 volume percent CO 2.

  8. Volume correction factor - Wikipedia

    en.wikipedia.org/wiki/Volume_Correction_Factor

    The formula for Volume Correction Factor is commonly defined as: V C F = C T L = exp ⁡ { − α T Δ T [ 1 + 0.8 α T ( Δ T + δ T ) ] } {\displaystyle VCF=C_{TL}=\exp\{-\alpha _{T}\Delta T[1+0.8\alpha _{T}(\Delta T+\delta _{T})]\}}

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    Reba Wrap Dress in Awning Stripe. $49 $145 Save $96. This dress is a Draper James bestseller, and for good reason. It has a slimming wrap silhouette, a romantic bow at the waist and whimsical ...

  10. Reticulocyte production index - Wikipedia

    en.wikipedia.org/wiki/Reticulocyte_production_index

    Calculation of RPI. Reticulocyte Production Index is calculated as follows: 1. = This calculation is to correct for the severity of the anemia.

  11. Equation of time - Wikipedia

    en.wikipedia.org/wiki/Equation_of_time

    A sundial was read and corrected with the table or graph of the equation of time. If a transit instrument was available, the sun's transit across the meridian (the moment the sun appears to be due south or north of the observer) was noted; the clock was then set to noon and offset by the number of minutes given by the equation of time for that ...