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Dive into the research topics where João Pedro Xavier is active.

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Featured researches published by João Pedro Xavier.


Archive | 2015

António Rodrigues, a Portuguese Architect with a Scientific Inclination

João Pedro Xavier

Antonio Rodrigues’s Onze Mil Virgens Chapel (ca. 1565) at Alcacer do Sal is a classic temple built as a mausoleum. Here we are able to discern the omnipresence of geometry, always in association with number. Although this temple is tied to a pre-existing one, it has a rigorous geometric plan based on the square, detected at different scales. An ad quadratum geometry is almost always present in the definition of the general proportions of the Chapel, as the side of the squared modular piers and pilasters and its diagonal are related with the measures of the whole. Other clearly discernable proportions are 5:4 and 7:6. The use of the 5:4 rectangle is related to the height of the celestial pole at Alcacer, evidence of Rodrigues’s “scientific inclination”. Further, the geometry is used to propose a hypothesis for a possible design of the main facade, one of the most puzzling aspects of this temple.


Archive | 2015

Perspective in António Rodrigues’s Tratado de Arquitectura

João Pedro Xavier

The significance of the Liuro de Perspectiva (Book of Perspective), attributed to Antonio Rodrigues, lies mainly in the introduction of an innovative perspective rule designed to solve questions raised by the propagation of inaccuracies and insufficiencies of previous methods. However, the author’s scientific limitations prevented him from fully understanding the enormous potential of his geometrically accurate construction. Decoding and verifying the validity of this peculiar perspective rule leads to the center of the debate surrounding the origins of perspectiva artificialis. Rodrigues’s work demonstrates a striking fidelity to central perspective, especially obvious in one centrally-planned composition with ad quadratum and ad circulum geometry. Rodrigues’s own Onze Mil Virgens Chapel, built some time before 1565 in Alcacer do Sal is a prime example of these concepts.


Nexus Network Journal | 2005

The Cambridge Companion to Piero della Francesca

João Pedro Xavier

No Abstract.


Nexus Network Journal | 2002

Nexus 2002 Post-Conference Excursion

João Pedro Xavier

Abstract.No abstract.


Nexus Network Journal | 2013

Grid-Based Design in Roman Villas: A Method of Analysis

Eliana Manuel Pinho; João Pedro Xavier


Nexus Network Journal | 2014

Leonardo 2013, 3-5 June 2013, Perdizes, Portugal

Kim Williams; João Pedro Xavier


Proceedings of Bridges 2011: Mathematics, Music, Art, Architecture, Culture | 2011

The Roman Villa in Rabaçal and Álvaro Siza

João Pedro Xavier; Eliana Manuel Pinho


Nexus Network Journal | 2011

Nexus 2010: Relationships between Architecture and Mathematics

Kim Williams; João Nuno Tavares; João Pedro Xavier


Nexus Network Journal | 2017

The Church of Clérigos in Porto as a Baroque Musical Instrument

João Pedro Xavier


Archive | 2016

Scenography as a theoretical and practical application of teaching perspective in the Portuguese Jesuit colleges

João Pedro Xavier; João Cabeleira

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