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  2. Automatic train stop - Wikipedia

    en.wikipedia.org/wiki/Automatic_train_stop

    Automatic train stop or ATS is a system on a train that automatically stops a train if certain situations occur (unresponsive train operator, earthquake, disconnected rail, train running over a stop signal, etc.) to prevent accidents.

  3. 2020 Monte Cristo Range earthquake - Wikipedia

    en.wikipedia.org/wiki/2020_Monte_Cristo_Range...

    The highway was reopened 10 hours after repair operations. Several post-earthquake field reconnaissance teams documented surface fault expressions, rock falls, subsidence features, and other geologic and geotechnical effects in the Columbus Salt Marsh to the west of U.S. Route 95 and surrounding areas.

  4. Battery holder - Wikipedia

    en.wikipedia.org/wiki/Battery_holder

    Battery types such as the 9-volt have snap-on contacts. Battery holders for zinc-air batteries must not be completely air-tight since approximately 1 litre of air is required per ampere-hour of discharge per cell. The battery holder may include a valve integrated with the device power switch to allow air to be admitted when the device is ...

  5. Tuned mass damper - Wikipedia

    en.wikipedia.org/wiki/Tuned_mass_damper

    The tuned mass damper was introduced as part of the suspension system by Renault on its 2005 F1 car (the Renault R25), at the 2005 Brazilian Grand Prix.The system reportedly reduced lap times by 0.3 seconds: a phenomenal gain for a relatively simple device. [1]

  6. List of deadly earthquakes since 1900 - Wikipedia

    en.wikipedia.org/wiki/List_of_deadly_earthquakes...

    The list incorporates high-quality earthquake source (i.e., origin time, location and earthquake magnitude) and fatality information from several sources. Earthquake locations are taken from the Centennial Catalog [ 1 ] and the updated Engdahl, van der Hilst and Buland earthquake catalog, [ 2 ] which is complete to December 2005.

  7. Fort Hunt Park - Wikipedia

    en.wikipedia.org/wiki/Fort_Hunt_Park

    Remains of several of the fort's original batteries, including Battery Mount Vernon, Battery Robinson, and Battery Sater, and Battery Porter (named after Lt. James Porter, an officer who was killed at Custer's Last Stand at the Little Bighorn. [4]), have been preserved, and may still be visited today. The structures have been stabilized enough ...

  8. Positive train control - Wikipedia

    en.wikipedia.org/wiki/Positive_train_control

    A Metrolink locomotive decal on an MP36PH-3C saying it has positive train control. Positive train control (PTC) is a family of automatic train protection systems deployed in the United States. [1]

  9. Forbes' Batteries - Wikipedia

    en.wikipedia.org/wiki/Forbes'_Batteries

    In 1727 the battery mounted two 6-pdr guns. In 1761 the British constructed Upper and Lower Forbes' Batteries. [4] Upper Forbes' Battery has two fine magazines, one brick and one stone, built against the cliff wall. Above the two batteries is Forbes' Lookout. During the Second World War a 40-mm Mark 3 gun on a mobile mounting was placed in ...

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