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  2. Plywood - Wikipedia

    en.wikipedia.org/wiki/Plywood

    It is an engineered wood from the family of manufactured boards, which include plywood, medium-density fibreboard (MDF), oriented strand board (OSB), and particle board (or chipboard). All plywoods bind resin and wood fibre sheets (cellulose cells are long, strong and thin) to form a composite material. The sheets of wood are stacked such that ...

  3. Asbestos insulating board - Wikipedia

    en.wikipedia.org/wiki/Asbestos_insulating_board

    Asbestos insulating board (AIB), also known by the trade names Asbestolux and Turnabestos, is an asbestos-containing board formerly used in construction for its fire resistance and insulating properties. [1] These boards were commonly used in the United Kingdom from the 1950s until production ended in 1980.

  4. Q - Wikipedia

    en.wikipedia.org/wiki/Q

    The Semitic sound value of Qôp was /q/ (voiceless uvular stop), and the form of the letter could have been based on the eye of a needle, a knot, or even a monkey with its tail hanging down.

  5. Kalman filter - Wikipedia

    en.wikipedia.org/wiki/Kalman_filter

    The filtering method is named for Hungarian émigré Rudolf E. Kálmán, although Thorvald Nicolai Thiele [14] [15] and Peter Swerling developed a similar algorithm earlier. . Richard S. Bucy of the Johns Hopkins Applied Physics Laboratory contributed to the theory, causing it to be known sometimes as Kalman–Bucy filter