Seeing/making visible: ancient criteria and modern procedures.The comparison of procedures and criteria stems from the relief of a baroque staircase located in Naples in the “Vergini” neighborhood which was the first to be built, by private initiative, outside the ancient city. Despite the limited space it proves quite representative. According to the taste of the time the staircase opens towards the internal courtyard dilating the entrance system. The objective measurements in plan and elevation show three levels linked by a ramp which cannot be seen as it is situated behind elements which resemble prosceniums framed on the front elevation of the landing and the balusters which support an ample polycentric arch. Despite the abstract method there is a strong perception of perspective: the objective measurements suggest a view in perspective. Which is the correct perception that leads to justify this sort of optical illusion? By observing the drawing one can verify, following the method of central projection s, that the physical elements of the proscenium elevations represent a perspective of sail vault which covers the landing. It is not relevant for an operative critique whether this was a sophism or deliberate plan. The unchanged criteria have proved the scientific nature of the illusion while the new graphical representation technologies go beyond. They have clarified the plastic articulation of the volumes and made the geometrical problem computable n each of its phases. Mathematical algorithms govern the digital representation. In the sequence, the views fix images which by showing the representation as governed by change make the description more effective.

Vedere/far vedere: criteri antichi e procedure moderne

ROSSI, Adriana
2012

Abstract

Seeing/making visible: ancient criteria and modern procedures.The comparison of procedures and criteria stems from the relief of a baroque staircase located in Naples in the “Vergini” neighborhood which was the first to be built, by private initiative, outside the ancient city. Despite the limited space it proves quite representative. According to the taste of the time the staircase opens towards the internal courtyard dilating the entrance system. The objective measurements in plan and elevation show three levels linked by a ramp which cannot be seen as it is situated behind elements which resemble prosceniums framed on the front elevation of the landing and the balusters which support an ample polycentric arch. Despite the abstract method there is a strong perception of perspective: the objective measurements suggest a view in perspective. Which is the correct perception that leads to justify this sort of optical illusion? By observing the drawing one can verify, following the method of central projection s, that the physical elements of the proscenium elevations represent a perspective of sail vault which covers the landing. It is not relevant for an operative critique whether this was a sophism or deliberate plan. The unchanged criteria have proved the scientific nature of the illusion while the new graphical representation technologies go beyond. They have clarified the plastic articulation of the volumes and made the geometrical problem computable n each of its phases. Mathematical algorithms govern the digital representation. In the sequence, the views fix images which by showing the representation as governed by change make the description more effective.
2012
9789871494255
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11591/180304
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