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The hemispherical dome is a surface formed by the rotation around a vertical axis of a semicircle. Like other "rotational domes" formed by the rotation of a curve around a vertical axis, hemispherical domes have circular bases and horizontal sections and are a type of "circular dome" for that reason.
The apparent lightness of its dome may be attributed to both even lighting and the unusual lack of pendentives, with the dome on its circular entablature above eight columns instead. [156] Its use of bulbous domes on the lantern and side towers was also unusual in Italy, where bulbous domes remained rare. [94]
The dome over the chamber known today as the Sala de Dos Hermanas ('Hall of the Two Sisters') is one of the most magnificent muqarnas domes in Islamic art, consisting of at least 5000 cells that unfold from a central summit downward into sixteen miniature domes around the dome's perimeter.
A tholos (pl.: tholoi; from Ancient Greek θόλος, meaning "conical roof" [1] or "dome"), in Latin tholus (pl.: tholi), is a form of building that was widely used in the classical world. It is a round structure with a circular wall and a roof, usually built upon a couple of steps (a podium), and often with a ring of columns supporting a ...
An oculus (from Latin oculus 'eye'; pl.: oculi) is a circular opening in the center of a dome or in a wall. Originating in classical architecture, it is a feature of Byzantine and Neoclassical architecture. A horizontal oculus in the center of a dome is also called opaion (from Ancient Greek ὀπαῖον '(smoke) hole'; pl.: opaia).
In architecture, a pendentive is a constructional device permitting the placing of a circular dome over a square room or of an elliptical dome over a rectangular room. [1] The pendentives, which are triangular segments of a sphere, taper to points at the bottom and spread at the top to establish the continuous circular or elliptical base needed for a dome. [2]
A rotunda (from Latin rotundus) is any roofed building with a circular ground plan, and sometimes covered by a dome. It may also refer to a round room within a building (a famous example being the one below the dome of the United States Capitol in Washington, D.C.). The Pantheon in Rome is perhaps the most famous, and is the most influential ...
A large dome was built in 1881–1882 over the circular courtyard of the Devonshire Royal Hospital in England with a diameter of 156 feet. [47] It used radial trussed ribs with no diagonal ties. [41] The dome of Pavia Cathedral, a building started in 1488, was completed with a large octagonal dome joined to the basilica plan of the church. [48]