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  2. Crash bar - Wikipedia

    en.wikipedia.org/wiki/Crash_bar

    Crash bar doors in a school, with upper vertical rod latches. A crash bar (also known as a panic exit device, panic bar, or bump bar) [1] [2] is a type of door opening mechanism which allows users to open a door by pushing a bar.

  3. Electromagnetic lock - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_lock

    An improved "shear" electromagnetic lock was patented on May 2, 1989, by Arthur, Richard and David Geringer of Security Door Controls, an access control hardware manufacturing firm. The device outlined in their designs was the same in principle as the modern magnetic lock consisting of an electromagnet and an armature plate.

  4. Internet of things - Wikipedia

    en.wikipedia.org/wiki/Internet_of_things

    Connected Home over IP (or Project Connected Home over IP) is an open-sourced, royalty-free home automation connectivity standard project which features compatibility among different smart home and Internet of things (IoT) products and software

  5. Line-replaceable unit - Wikipedia

    en.wikipedia.org/wiki/Line-replaceable_unit

    A line-replaceable unit (LRU [1]), lower line-replaceable unit (LLRU), [citation needed] line-replaceable component (LRC), or line-replaceable item (LRI) [2] is a modular component of an airplane, [3] ship or spacecraft [4] (or any other manufactured device) that is designed to be replaced quickly at an operating location (1st line).

  6. ATM - Wikipedia

    en.wikipedia.org/wiki/ATM

    This is an accepted version of this page This is the latest accepted revision, reviewed on 29 January 2025. Electronic telecommunications device to perform financial transactions Several terms redirect here. For other uses, see Cash machine (disambiguation), Money machine (disambiguation), and ATM (disambiguation). An old Nixdorf ATM Smaller indoor ATMs dispense money inside convenience stores ...

  7. Toilet - Wikipedia

    en.wikipedia.org/wiki/Toilet

    A toilet [n 1] is a piece of sanitary hardware that collects human waste (urine and feces), and sometimes toilet paper, usually for disposal. Flush toilets use water, while dry or non-flush toilets do not.

  8. Space Shuttle - Wikipedia

    en.wikipedia.org/wiki/Space_Shuttle

    Columbia undergoing installation of its ceramic tiles On June 4, 1974, Rockwell began construction on the first orbiter, OV-101, dubbed Constitution, later to be renamed Enterprise . Enterprise was designed as a test vehicle, and did not include engines or heat shielding.

  9. Tent - Wikipedia

    en.wikipedia.org/wiki/Tent

    Because a gazebo is free-standing, it is often used as a shelter for a temporary shop at a fair or street market. A beach tent is often a simplified form of dome tent and provide a useful (relatively sand-free) place to temporarily store beach equipment, but is at most showerproof. Some beach tents use specially treated fabric which is opaque ...

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