This work concerns the subjective impression of perceived illumination. The purpose of the study is to test attributes expressing qualitative experiences referring to ambient lighting that can be applied as descriptors. Seventy participants viewed an actual model room, with the fourth wall removed (viewing booth). Walls, floor, and ceiling were achromatic. Two achromatic cubes were placed inside the room: One was a reflectance increment to the walls, the other a decrement. The room was illuminated by two different light sources, Artificial Daylight (D65) or Tungsten Filament (F), the order of which was randomized across participants. The participants' task was to evaluate ambient illumination for each light source. A semantic differential method was employed with 27 pairs of adjectives on 1 to 7 rating scales, categorized in three groups: characteristics of atmosphere, time, and cross-modal. Only the ratings of nine pairs of adjectives were not influenced by the type of illumination. The most differentiated couples under different illuminants were hot/cold and modern/old, but large differences also appeared with the following couples: hard/soft, technological/primitive, summery/wintry, warm/cool, sensual/frigid, natural/artificial, and hospitable/inhospitable. The hypothesis that there would be consistency among the subjects in evaluations of the characteristics tested and that these would be differently perceived under different illuminants was confirmed. The results show that it is possible to identify subjective perceived illumination as a phenomenon endowed with specific filling-in qualities and that as a perceptual experience it can be categorized, with implications for application in architecture and design.

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<p>This paper reports new data about the estimation of the volumetric capacity of ceramic vessels from the Neolithic sites of Lugo di Grezzana (Verona, Italy) and Riparo Gaban (Trento, Italy). The methodological protocol is based on a free and open source 3D computer graphics software, called Blender®. The estimate of the volumetric capacity has been relied from the graphic elaboration of the archaeology drawing of the artifacts. Through the calculation of volume has been possible to obtain an estimation of the total capacity of the vessels, proposing two types of content. Subsequently, the volumetric data was related to diameter/height ratio of each ceramic vessel, in order to define a range of variability in each typological class. Data from both sites were later compared, highlighted for the most part of them a specific distribution that could be a consequence of different functional uses and/or cultural models. This paper concludes the preliminary results presented at the 2020 IMEKO TC4 International Conference on Metrology and Archaeology for Cultural Heritage.</p>