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  2. Bubble raft - Wikipedia

    en.wikipedia.org/wiki/Bubble_raft

    A bubble raft is an array of bubbles. It demonstrates materials' microstructural and atomic length-scale behavior by modelling the {111} plane of a close-packed crystal. A material's observable and measurable mechanical properties strongly depend on its atomic and microstructural configuration and characteristics.

  3. Space elevator construction - Wikipedia

    en.wikipedia.org/wiki/Space_elevator_construction

    House Tether (Zylon fiber and M77 adhesive). [7] Climber Speed 83 m/s (300 km/h) a: 18.3 m/s (66 km/h) 4 m/s (14 km/h) 2010 2009 Battery-powered climber to a distance of 300m, Second Japan Space Elevator Technical & Engineering Competition. [8] Beam-powered climber to an altitude of 1km, Space Elevator Games 2009. [9] Altitude 36,000 km [10 ...

  4. Elevator - Wikipedia

    en.wikipedia.org/wiki/Elevator

    As of January 2008, Spain is the nation with the most elevators installed per capita [105] in the world, with 950,000 elevators installed [106] that run more than one hundred million lifts every day, followed by United States with 700,000 elevators installed and China with 610,000 elevators installed since 1949. [107]

  5. Wikipedia:Vital articles/List of all articles - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:Vital_articles/...

    (2,879) T Tauri star · T cell · T-Series (company) · T-shirt · T-square · T-top · T. Allston Brown · T. Berry Brazelton · T. Boone Pickens · T. E. Hulme · T. E. Lawrence · T. H. Green · T. H. White · T. Nelson Downs · T. S. Eliot · T.A.T.u. · TGV · TIFF · TLC (group) · TNT · TNT equivalent · TRAPPIST-1 · TRS-80 · TSMC ...

  6. Construction of the World Trade Center - Wikipedia

    en.wikipedia.org/wiki/Construction_of_the_World...

    [104] [93] All columns were placed on bedrock, which, unlike that in Midtown Manhattan, where the bedrock is shallow, is at 65–85 feet (20–26 m) below the surface. [ 105 ] The spandrel plates, typically 52 inches (1.3 m) deep, were welded to the exterior columns to create the modular pieces off-site at the fabrication shop.