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  2. Category:Corrective lenses - Wikipedia

    en.wikipedia.org/wiki/Category:Corrective_lenses

    Corrective lenses. A corrective lens is a lens worn on or before the eye. They are used to treat myopia, hypermetropia, astigmatism, and presbyopia .

  3. 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.

  4. M1156 Precision Guidance Kit - Wikipedia

    en.wikipedia.org/wiki/M1156_Precision_Guidance_Kit

    The M1156 Precision Guidance Kit (PGK), formerly XM1156, is a U.S. Army -designed precision guidance system to turn existing 155 mm artillery shells into smart weapons. [2] The prime contractor was Alliant Techsystems – later merging with Orbital Sciences Corporation to form Orbital ATK, in turn being taken over by Northrop Grumman and ...

  5. Prentice position - Wikipedia

    en.wikipedia.org/wiki/Prentice_position

    The Prentice position is an orientation of a prism, used in optics, optometry and ophthalmology. [1] In this position, named after the optician Charles F. Prentice, the prism is oriented such that light enters it at an angle of 90° to the first surface, so that the beam does not refract at that surface. All the deviation caused by the prism ...

  6. Zenni Optical - Wikipedia

    en.wikipedia.org/wiki/Zenni_Optical

    He noted that the company was unable to support his prescription that required both prism correction and progressive lens so he had to purchase two glasses. After receiving the glasses, Lazarus found that the frames "had looked pretty cool online [but] appeared a bit cheaper in person".

  7. Prism Leisure Corporation - Wikipedia

    en.wikipedia.org/wiki/Prism_Leisure_Corporation

    Prism Leisure Corporation Plc was a distribution and publishing company that primarily focused on reissues and compilations, often at low prices. The company was located in Enfield, Middlesex, United Kingdom until it was placed into administration in June 2007.

  8. Flat-field correction - Wikipedia

    en.wikipedia.org/wiki/Flat-field_correction

    Flat-field correction ( FFC) is a digital imaging technique to mitigate the image detector pixel-to-pixel sensitivity and distortions in the optical path. It is a standard calibration procedure in everything from personal digital cameras to large telescopes.

  9. Error correction code - Wikipedia

    en.wikipedia.org/wiki/Error_correction_code

    In contrast, convolutional codes are typically decoded using soft-decision algorithms like the Viterbi, MAP or BCJR algorithms, which process (discretized) analog signals, and which allow for much higher error-correction performance than hard-decision decoding.