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  2. 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. Euler's formula states that, for any real number x, one has. where e is the base of the natural logarithm, i is the imaginary unit, and ...

  3. Pellin–Broca prism - Wikipedia

    en.wikipedia.org/wiki/Pellin–Broca_prism

    The prism is named for its inventors, the French instrument maker Ph. Pellin and professor of physiological optics André Broca. [1] The prism consists of a four-sided block of glass shaped as a right prism with 90°, 75°, 135°, and 60° angles on the end faces. Light enters the prism through face AB, undergoes total internal reflection from ...

  4. Ray tracing (physics) - Wikipedia

    en.wikipedia.org/wiki/Ray_tracing_(physics)

    Ray tracing (physics) In physics, ray tracing is a method for calculating the path of waves or particles through a system with regions of varying propagation velocity, absorption characteristics, and reflecting surfaces. Under these circumstances, wavefronts may bend, change direction, or reflect off surfaces, complicating analysis.

  5. Larmor formula - Wikipedia

    en.wikipedia.org/wiki/Larmor_formula

    This is a coherent process, so the total power radiated is proportional to the square of the number of electrons accelerating. In electrodynamics, the Larmor formula is used to calculate the total power radiated by a nonrelativistic point charge as it accelerates. It was first derived by J. J. Larmor in 1897, [1] in the context of the wave ...

  6. Circulation (physics) - Wikipedia

    en.wikipedia.org/wiki/Circulation_(physics)

    In physics, circulation is the line integral of a vector field around a closed curve. In fluid dynamics, the field is the fluid velocity field. In electrodynamics, it can be the electric or the magnetic field. Circulation was first used independently by Frederick Lanchester, Martin Kutta and Nikolay Zhukovsky. [citation needed]

  7. Reticulocyte production index - Wikipedia

    en.wikipedia.org/wiki/Reticulocyte_production_index

    The reticulocyte production index ( RPI ), also called a corrected reticulocyte count ( CRC ), is a calculated value used in the diagnosis of anemia. This calculation is necessary because the raw reticulocyte count is misleading in anemic patients. The problem arises because the reticulocyte count is not really a count but rather a percentage ...

  8. Applied Physics Laboratory - Wikipedia

    en.wikipedia.org/wiki/Applied_Physics_Laboratory

    The modern Applied Physics Laboratory is located in Laurel, Maryland, and spans 461 acres with more than 30 buildings on site. Additional auxiliary campuses exist in the surrounding areas. The campus includes multiple cutting-edge innovation and collaboration spaces as well as state-of-the-art labs and test facilities.

  9. Šidák correction - Wikipedia

    en.wikipedia.org/wiki/Šidák_correction

    The Šidák correction is derived by assuming that the individual tests are independent. Let the significance threshold for each test be α 1 {\displaystyle \alpha _{1}} ; then the probability that at least one of the tests is significant under this threshold is (1 - the probability that none of them are significant).