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  2. Free-air gravity anomaly - Wikipedia

    en.wikipedia.org/wiki/Free-air_gravity_anomaly

    Free-air gravity anomaly. In geophysics, the free-air gravity anomaly, often simply called the free-air anomaly, is the measured gravity anomaly after a free-air correction is applied to account for the elevation at which a measurement is made. It does so by adjusting these measurements of gravity to what would have been measured at a reference ...

  3. Dioptre - Wikipedia

    en.wikipedia.org/wiki/Dioptre

    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 of a lens or curved mirror, which is a physical quantity equal to the reciprocal of the focal length ...

  4. Euler's formula - Wikipedia

    en.wikipedia.org/wiki/Euler's_formula

    Euler's formula is ubiquitous in mathematics, physics, chemistry, and engineering. The physicist Richard Feynman called the equation "our jewel" and "the most remarkable formula in mathematics". When x = π, Euler's formula may be rewritten as e iπ + 1 = 0 or e iπ = -1, which is known as Euler's identity.

  5. Four prism dioptre reflex test - Wikipedia

    en.wikipedia.org/wiki/Four_prism_dioptre_reflex_test

    The Four Prism Dioptre Reflex Test (also known as the 4 PRT, or 4 Prism Dioptre Base-out Test) is an objective, non-dissociative test used to prove the alignment of both eyes (i.e. the presence of binocular single vision) by assessing motor fusion. [1] Through the use of a 4 dioptre base out prism, diplopia is induced which is the driving force ...

  6. Šidák correction - Wikipedia

    en.wikipedia.org/wiki/Šidák_correction

    One can also compute confidence intervals matching the test decision using the Šidák correction by using 100 (1 − α) 1/m % confidence intervals. For continuous problems, one can employ Bayesian logic to compute m {\displaystyle m} from the prior-to-posterior volume ratio.

  7. 1967 European Formula Two Championship - Wikipedia

    en.wikipedia.org/wiki/1967_European_Formula_Two...

    The 1967 European Formula Two season was the 1st FIA European Formula Two Championship.It commenced on 24 March 1967 and ended on 8 October after ten races. Jacky Ickx won the Championship after winning the last race in Vallelunga, but the most successful driver of the season was Jochen Rindt, who won five Championship races but, as a graded driver, he was ineligible to earn points, so Ickx ...

  8. Snell's law - Wikipedia

    en.wikipedia.org/wiki/Snell's_law

    Snell's law (also known as the Snell–Descartes law, the ibn-Sahl law, [1] and the law of refraction) is a formula used to describe the relationship between the angles of incidence and refraction, when referring to light or other waves passing through a boundary between two different isotropic media, such as water, glass, or air.

  9. Ericson-Ericson Lorentz-Lorenz correction - Wikipedia

    en.wikipedia.org/wiki/Ericson-Ericson_Lorentz...

    The physics becomes closely similar although the nuclear density is about 15 orders of magnitude larger than that of ordinary matter and the nature of the dipole interaction is totally different. The correction was predicted in 1963 by Magda Ericson [3] and was derived in 1966 together with Torleif Ericson . [4]