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  2. Bonferroni correction - Wikipedia

    en.wikipedia.org/wiki/Bonferroni_correction

    When searching for a signal in a continuous parameter space there can also be a problem of multiple comparisons, or look-elsewhere effect. For example, a physicist might be looking to discover a particle of unknown mass by considering a large range of masses; this was the case during the Nobel Prize winning detection of the Higgs boson.

  3. Fresnel lens - Wikipedia

    en.wikipedia.org/wiki/Fresnel_lens

    First-order rotating catadioptric Fresnel lens, dated 1870, displayed at the Musée national de la Marine, Paris.In this case the dioptric prisms (inside the bronze rings) and catadioptric prisms (outside) are arranged to concentrate the light from the central lamp into four revolving beams, seen by sailors as four flashes per revolution.

  4. Physics - Wikipedia

    en.wikipedia.org/wiki/Physics

    The physics of elementary particles is on an even smaller scale since it is concerned with the most basic units of matter; this branch of physics is also known as high-energy physics because of the extremely high energies necessary to produce many types of particles in particle accelerators. On this scale, ordinary, commonsensical notions of ...

  5. The Irregular at Magic High School - Wikipedia

    en.wikipedia.org/wiki/The_Irregular_at_Magic...

    The second game is The Irregular at Magic High School: School Magicus Battle [Jp. 27], a Japanese role-playing game by Mobage. It was made available for Android, iOS, and feature phone on June 9, 2014. [206] The third game is The Irregular at Magic High School: Lost Zero, developed by BeXide and published by Square Enix. It was made available ...

  6. Standard deviation - Wikipedia

    en.wikipedia.org/wiki/Standard_deviation

    This is known as Bessel's correction. [4] [5] Roughly, the reason for it is that the formula for the sample variance relies on computing differences of observations from the sample mean, and the sample mean itself was constructed to be as close as possible to the observations, so just dividing by n would underestimate the variability.

  7. Quantum error correction - Wikipedia

    en.wikipedia.org/wiki/Quantum_error_correction

    The error-correction demonstration was performed on Schrodinger-cat states encoded in a superconducting resonator, and employed a quantum controller capable of performing real-time feedback operations including read-out of the quantum information, its analysis, and the correction of its detected errors. The work demonstrated how the quantum ...

  8. Refracting telescope - Wikipedia

    en.wikipedia.org/wiki/Refracting_telescope

    Achromatic lenses are corrected to bring two wavelengths (typically red and blue) into focus in the same plane. [citation needed] Chester More Hall is noted as having made the first twin color corrected lens in 1730. [16] Dollond achromats were quite popular in the 18th century. [17] [18] A major appeal was they could be made shorter. [18]

  9. Klinkenberg correction - Wikipedia

    en.wikipedia.org/wiki/Klinkenberg_correction

    A more accurate correction factor can be obtained using Knudsen correction. When using nitrogen gas for core plug measurements, the Klinkenberg correction is usually necessary due to the so-called Klinkenberg gas slippage effect. This takes place when the pore space approaches the mean free path of the gas