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  2. Ionic order - Wikipedia

    en.wikipedia.org/wiki/Ionic_order

    The Ionic order is one of the three canonic orders of classical architecture, the other two being the Doric and the Corinthian. There are two lesser orders: the Tuscan (a plainer Doric), and the rich variant of Corinthian called the composite order. Of the three classical canonic orders, the Corinthian order has the narrowest columns, followed ...

  3. Order of operations - Wikipedia

    en.wikipedia.org/wiki/Order_of_operations

    Order of operations. In mathematics and computer programming, the order of operations is a collection of rules that reflect conventions about which operations to perform first in order to evaluate a given mathematical expression. These rules are formalized with a ranking of the operations. The rank of an operation is called its precedence, and ...

  4. Classical order - Wikipedia

    en.wikipedia.org/wiki/Classical_order

    Classical order. Greek, "Etruscan" and Roman orders, with stylobate and pediment. An order in architecture is a certain assemblage of parts subject to uniform established proportions, regulated by the office that each part has to perform. [1] Coming down to the present from Ancient Greek and Ancient Roman civilization, the architectural orders ...

  5. History of molecular theory - Wikipedia

    en.wikipedia.org/wiki/History_of_molecular_theory

    History of molecular theory. Space-filling model of the H 2 O molecule. In chemistry, the history of molecular theory traces the origins of the concept or idea of the existence of strong chemical bonds between two or more atoms. A modern conceptualization of molecules began to develop in the 19th century along with experimental evidence for ...

  6. Corinthian order - Wikipedia

    en.wikipedia.org/wiki/Corinthian_order

    Corinthian order. The Corinthian order (Greek: Κορινθιακὸς ῥυθμός, Korinthiakós rythmós; Latin: Ordo Corinthius) is the last developed and most ornate of the three principal classical orders of Ancient Greek architecture and Roman architecture. The other two are the Doric order, which was the earliest, followed by the Ionic ...

  7. Crystal structure - Wikipedia

    en.wikipedia.org/wiki/Crystal_structure

    Crystal structure of table salt (sodium in purple, chlorine in green) In crystallography, crystal structure is a description of ordered arrangement of atoms, ions, or molecules in a crystalline material. [1] Ordered structures occur from intrinsic nature of constituent particles to form symmetric patterns that repeat along the principal ...

  8. Renaissance architecture of Toulouse - Wikipedia

    en.wikipedia.org/wiki/Renaissance_architecture...

    The Ionic order of the gallery of the Hôtel de Pins, built around 1530, is thus taken from the edition of the Treatise of Vitruvius published by Cesariano in 1521. The design of its scroll is still imperfect, but this early manifestation of Vitruvian architecture must be credited to the commissioner, who had a brilliant diplomatic career in ...

  9. Tuscan order - Wikipedia

    en.wikipedia.org/wiki/Tuscan_order

    St Paul's, Covent Garden by Inigo Jones (1633), "the handsomest barn in England". The Tuscan order (Latin Ordo Tuscanicus or Ordo Tuscanus, with the meaning of Etruscan order) is one of the two classical orders developed by the Romans, the other being the composite order. It is influenced by the Doric order, but with un- fluted columns and a ...