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  2. Door card - Wikipedia

    en.wikipedia.org/wiki/Door_card

    Door card finished in black on a white door frame Car door panel in matching color and upholstery as the car's seats. A door card (in British English) [citation needed] or a door panel (in American English) is an insert on the door of a vehicle that covers the door's internal components.

  3. Washington Monument - Wikipedia

    en.wikipedia.org/wiki/Washington_Monument

    On August 23, 2011, the Washington Monument sustained damage during the 5.8 magnitude 2011 Virginia earthquake; [72] over 150 cracks were found in the monument. [73] A National Park Service spokesperson reported that inspectors discovered a crack near the top of the structure, and announced that the monument would be closed indefinitely.

  4. Indoor air quality - Wikipedia

    en.wikipedia.org/wiki/Indoor_air_quality

    Regulations and standards from around the world show that CO 2 levels below 1000 ppm represent good IAQ, between 1000 and 1500 ppm represent moderate IAQ and greater than 1500 ppm represent poor IAQ. [88] Carbon dioxide concentrations in closed or confined rooms can increase to 1,000 ppm within 45 minutes of enclosure.

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  6. De Havilland Mosquito - Wikipedia

    en.wikipedia.org/wiki/De_Havilland_Mosquito

    The gun had a muzzle velocity of 2,950 ft/s (900 m/s) [155] and an excellent range of some 1,800–1,500 yd (1,600–1,400 m). It was sensitive to sidewards movement; an attack required a dive from 5,000 ft (1,500 m) at a 30° angle with the turn and bank indicator on centre. A move during the dive could jam the gun. [196]

  7. Cathode-ray tube - Wikipedia

    en.wikipedia.org/wiki/Cathode-ray_tube

    The tube is a glass envelope which is heavy, fragile, and long from front screen face to rear end. Its interior must be close to a vacuum to prevent the emitted electrons from colliding with air molecules and scattering before they hit the tube's face. Thus, the interior is evacuated to less than a millionth of atmospheric pressure. [4]

  8. List of accidents and incidents involving military aircraft ...

    en.wikipedia.org/wiki/List_of_accidents_and...

    [20] [21] The crash site was discovered on 13 January at about the 5,000-foot (1,500 m) level of Cajon Mountain. 13 January Former Navy pilot, now a test pilot for Douglas Aircraft Company , James B. Verdin , 36, is killed this date when he bails out of A4D Skyhawk , BuNo 137815, at 30,000 feet (9,100 m) during a test flight near Victorville ...

  9. Headlamp - Wikipedia

    en.wikipedia.org/wiki/Headlamp

    A motor scooter's front with an impractical number and variety of headlamps, added for decorative purposes and characteristic of Mod culture. A headlamp is a lamp attached to the front of a vehicle to illuminate the road ahead.