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The Sanfu huangtu (三輔黃圖), a third-century book written by Miao Changyan about the palaces at Chang'an, describes a bird-shaped weather vane situated on a tower roof. [2] The oldest surviving weather vane with the shape of a rooster is the Gallo di Ramperto, made in 820 and now preserved in the Museo di Santa Giulia in Brescia, Lombardy ...
A cowl is a usually hood-shaped covering used to increase the draft of a chimney and prevent backflow. The cowl, usually made of galvanized iron, is fitted to the chimney pot to prevent wind blowing the smoke back down into the room below.
Whirligig store. A whirligig is an object that spins or whirls, or has at least one part that spins or whirls. It can also be a pinwheel, spinning top, buzzer, comic weathervane, gee-haw, spinner, whirlygig, whirlijig, whirlyjig, whirlybird, or simply a whirly.
As it rises, it displaces air which descends outside the core of the vortex. This cool air returning acts as a balance against the spinning hot-air outer wall and keeps the system stable. [4] The spinning effect, along with surface friction, usually will produce a forward momentum. The dust devil may be sustained if it moves over nearby sources ...
A French old-fashioned carousel with stairs in La Rochelle. A carousel or carrousel (mainly North American English), [1] merry-go-round (international), Galloper (international) or roundabout (British English) [2] is a type of amusement ride consisting of a rotating circular platform with seats for riders.
Illustration of St. Elmo's fire on a ship at sea Electrostatic discharge flashes across the windscreen of a KC-10 cockpit.. St. Elmo's fire (also called witchfire or witch's fire [1]) is a weather phenomenon in which luminous plasma is created by a corona discharge from a rod-like object such as a mast, spire, chimney, or animal horn [2] in an atmospheric electric field.
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In architecture, a cupola (/ ˈ k (j) uː p ə l ə /) [1] is a relatively small, usually dome-like structure on top of a building [2] often crowning a larger roof or dome. [ 3 ] [ 4 ] Cupolas often serve as a roof lantern to admit light and air or as a lookout.