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  2. Type C videotape - Wikipedia

    en.wikipedia.org/wiki/Type_C_videotape

    1-inch Type C Helical Scan or SMPTE C is a professional reel-to-reel analog recording helical scan videotape format co-developed and introduced by Ampex and Sony in 1976. It became the replacement in the professional video and broadcast television industries for the then-incumbent 2-inch quadruplex videotape (2-inch Quad for short) open-reel format.

  3. File format - Wikipedia

    en.wikipedia.org/wiki/File_format

    File formats often have a published specification describing the encoding method and enabling testing of program intended functionality. Not all formats have freely available specification documents, partly because some developers view their specification documents as trade secrets, and partly because other developers never author a formal specification document, letting precedent set by other ...

  4. Nocturne in C-sharp minor, Op. posth. (Chopin) - Wikipedia

    en.wikipedia.org/wiki/Nocturne_in_C-sharp_minor...

    The Nocturne No. 20 in C ♯ minor, Op. posth., Lento con gran espressione, P 1, No. 16, KKIVa/16, WN 37, is a solo piano piece composed by Frédéric Chopin in 1830 and published in 1875. Chopin dedicated this work to his older sister Ludwika Chopin , with the statement: "To my sister Ludwika as an exercise before beginning the study of my ...

  5. Comparison of high-definition optical disc formats - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_high...

    Comparison of various optical storage media. This article compares the technical specifications of multiple high-definition formats, including HD DVD and Blu-ray Disc; two mutually incompatible, high-definition optical disc formats that, beginning in 2006, attempted to improve upon and eventually replace the DVD standard.

  6. Single-lens reflex camera - Wikipedia

    en.wikipedia.org/wiki/Single-lens_reflex_camera

    Another prism design was the porro prism system used in the Olympus Pen F, the Pen FT, the Pen FV half-frame 35 mm SLR cameras. This was later used on the Olympus EVOLT E-3x0 series, the Leica Digilux 3 and the Panasonic DMC-L1 .

  7. List of presidents of the United States - Wikipedia

    en.wikipedia.org/wiki/List_of_Presidents_of_the...

    The White House, official residence of the president of the United States, in July 2008. The president of the United States is the head of state and head of government of the United States, [1] indirectly elected to a four-year term via the Electoral College. [2]

  8. Smacker video - Wikipedia

    en.wikipedia.org/wiki/Smacker_video

    The Smacker format specifies a container format, a video compression format, and an audio compression format. [2] Since its release in 1994, Smacker has been used in over 2300 games. [1] Blizzard used this format for the cinematic videos seen in its games Warcraft II, StarCraft and Diablo I. [3] The format has been reverse engineered and ...

  9. Eyeglass prescription - Wikipedia

    en.wikipedia.org/wiki/Eyeglass_prescription

    Using a phoropter to determine a prescription for eyeglasses. An eyeglass prescription is an order written by an eyewear prescriber, such as an optometrist, that specifies the value of all parameters the prescriber has deemed necessary to construct and/or dispense corrective lenses appropriate for a patient.