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  2. Blackboard - Wikipedia

    en.wikipedia.org/wiki/Blackboard

    Stick-slip effect with a chalk on a blackboard. Chalk sticks are produced in white and in various colours, especially for use with blackboards. White chalk sticks are made mainly from calcium carbonate derived from mineral chalk or limestone, while coloured chalk sticks are made from calcium sulphate in its dihydrate form, CaSO 4 ·2H 2 O, derived from gypsum.

  3. Chalkboard (disambiguation) - Wikipedia

    en.wikipedia.org/wiki/Chalkboard_(disambiguation)

    Chalkboard may also refer to: Chalkboard (typeface) See also. Blackboard (disambiguation) This page was last edited on 29 April 2022, at 23:48 (UTC). Text is ...

  4. Court show - Wikipedia

    en.wikipedia.org/wiki/Court_show

    Murder, Mystery and My Family (Chalkboard TV, BBC Television, 2018–2021) British non-traditional court show in which historical cases in Britain sentenced to the death penalty (typically murder) are reexamined by senior barristers for the prosecution and defence for a posthumous hearing and potential reprieve by semi-retired senior judge ...

  5. Specific Area Message Encoding - Wikipedia

    en.wikipedia.org/wiki/Specific_Area_Message_Encoding

    Specific Area Message Encoding (SAME) is a protocol used for framing and classification of broadcasting emergency warning messages. It was developed by the United States National Weather Service for use on its NOAA Weather Radio (NWR) network, and was later adopted by the Federal Communications Commission for the Emergency Alert System, then subsequently by Environment Canada for use on its ...

  6. Clapperboard - Wikipedia

    en.wikipedia.org/wiki/Clapperboard

    Clapperboard. A clapperboard, also known as a dumb slate, clapboard, film clapper, film slate, movie slate, or production slate, is a device used in filmmaking, television production and video production to assist in synchronizing of picture and sound, and to designate and mark the various scenes and takes as they are filmed and audio-recorded.

  7. The Lurker at the Threshold - Wikipedia

    en.wikipedia.org/wiki/The_Lurker_at_the_Threshold

    The title of the book is seen written on the chalkboard behind high school teacher Jake Amberson as a reading assignment in a scene from the first episode of the filmed adaptation of Stephen King's novel 11/22/1963. King is a lifelong fan of Lovecraft and has himself written stories considered to be influenced by the Cthulhu Mythos.