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  2. Electromagnetic lock - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_lock

    Filler plates are also used to provide a large, flat mounting area on the door frame when the electromagnet is larger than the available mounting space on the door frame due to the frame's geometry. The magnetic lock should always be installed on the secure side of the door. Most installations are surface mounted.

  3. Electromagnetic door holder - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_door_holder

    Wall-mounted electromagnetic door holder securing a door in the open position. An electromagnetic door holder (electromagnetic door holder and release or hold-open device, sometimes informally called a mag hold open or electric doorstop) is a simple electromechanical mechanism which can be used to hold a fire door or security door open until given a signal to release.

  4. Frame and panel - Wikipedia

    en.wikipedia.org/wiki/Frame_and_panel

    These items center the panel in the frame and absorb seasonal movement. A popular item for this purpose is a small rubber ball, known as a spaceball (a trademarked product). Some cabinet makers will also use small pieces of cork to allow for movement. The panels are usually either flat or raised. A flat panel has its visible face flush with the ...

  5. Door - Wikipedia

    en.wikipedia.org/wiki/Door

    The panels typically fit into grooves in the other pieces, and help to keep the door rigid. Panels may be flat, or in raised panel designs. Can be glued in or stay as a floating panel. Light – a piece of glass used in place of a panel, essentially giving the door a window.

  6. Electrical enclosure - Wikipedia

    en.wikipedia.org/wiki/Electrical_enclosure

    An electrical enclosure is a cabinet for electrical or electronic equipment to mount switches, knobs and displays and to prevent electrical shock to equipment users and protect the contents from the environment. The enclosure is the only part of the equipment which is seen by users.

  7. Magnetic levitation - Wikipedia

    en.wikipedia.org/wiki/Magnetic_levitation

    Magnetic levitation can be stabilised using different techniques; here rotation (spin) is used. Magnetic levitation (maglev) or magnetic suspension is a method by which an object is suspended with no support other than magnetic fields. Magnetic force is used to counteract the effects of the gravitational force and any other forces. [2]

  8. Halbach array - Wikipedia

    en.wikipedia.org/wiki/Halbach_array

    Magnetic viewing film showing a flat refrigerator magnet's magnetization Flat flexible (not hard ceramic ferrite ) refrigerator magnets are created with a Halbach magnetization pattern for a stronger holding force when attached to a flat ferromagnetic surface (e.g. a fridge door) than the holding force from a uniform magnetization.

  9. Buckminster Fuller - Wikipedia

    en.wikipedia.org/wiki/Buckminster_Fuller

    According to Fuller biographer Steve Crooks, the house was designed to be delivered in two cylindrical packages, with interior color panels available at local dealers. A circular structure at the top of the house was designed to rotate around a central mast to use natural winds for cooling and air circulation.