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  2. Penrose stairs - Wikipedia

    en.wikipedia.org/wiki/Penrose_stairs

    In the real world, the hero should always be in front of the villain throughout this chase. However, in the case of the Penrose stairs the hero descends another flight of stairs to catch up to the antagonist and catch him unaware. [14] The cover of the 2011 album Angles by American rock band The Strokes depicts a complex set of Penrose stairs.

  3. Stairs - Wikipedia

    en.wikipedia.org/wiki/Stairs

    A staircase or stairway is one or more flights of stairs leading from one floor to another, and includes landings, newel posts, handrails, balustrades, and additional parts. [4] In buildings, stairs is a term applied to a complete flight of steps between two floors. A stair flight is a run of stairs or steps

  4. Staircase - Wikipedia

    en.wikipedia.org/wiki/Staircase

    Good lighting is important in a staircase so users see where they are going and to prevent falls. [6] There is often a window on the wall to let in daylight.In many cases, indoor stairs are placed far inside the building structure, and it is often not easy to get access to a wall on the outside where it would be natural to have a regular window for letting daylight in.

  5. List of interactive geometry software - Wikipedia

    en.wikipedia.org/wiki/List_of_interactive...

    Interactive proof, diagram checking, teacher/student models, labels with dynamic placeholders Geometry Expressions Yes No Yes Yes No No Yes Yes (Interactive HTML5/JS Apps) Yes No Symbolic calculations, which can be copied as input for CAS, TeX, and source code in 21 formats/languages. Functions. Arcs on any function or curve.

  6. 16 Divisions - Wikipedia

    en.wikipedia.org/wiki/16_Divisions

    The 16 Divisions of construction, as defined by the Construction Specifications Institute (CSI)'s MasterFormat, is the most widely used standard for organizing specifications and other written information for commercial and institutional building projects in the U.S. and Canada.

  7. Stair climbing - Wikipedia

    en.wikipedia.org/wiki/Stair_climbing

    Stair climbing has developed into the organized sport tower running.Every year several stair climbing races are held around the world with the competitors running up the stairs of some of the world's tallest buildings and towers (e.g., the Empire State Building, Gran Hotel Bali), or on outside stairs such as the Niesenbahn Stairway.