1,721,029 research outputs found
Considerations on light and colour for TV broadcasting
No full textIn a recent teaching experience within the Master in Lighting Design & LED Technology of Politecnico di Milano, the students had the opportunity to visit the production studios of Mediaset and to attend a lesson on the use of light in television spaces. The subject is undoubtedly fascinating, having its roots in the art of illumination of classical theatre, up to new approaches and technologies, such as automated mobile lights and LED light sources.
The approach to lighting for the TV differs (albeit with some significant overlap) from the more traditional architectural lighting; the organization of the workgroup, the design processes and the tools used, the objectives to be expressed with the light and the strategies to achieve them, the available technologies and above all, the colour control of the lighting envelope.
Lighting for television spaces (but also for movie industry) is based on the assumption that the final observer is not the human being as for the architectural sector, but the camera. The digital eye of the camera does not have the internal dynamics of the human visual system; it does not have the same automatic adaptation and correction mechanisms, although technology allows numerous operations to control the parameters related to colour. Based on this assumption, the indices commonly used for the human observer such as the CRI or TM-30 are also not adequate for an evaluation of the sources (or lighting systems) for television and cinema applications.
The purpose of this contribution is not to cover all the techniques for the lighting of television studios (extensive topic) entirely, but to collect a right amount of information relating to the operations on light and its chromaticities, such as correction and indices used for the colour temperature or the limits and possibilities given by the new technologies
Between the lines: a survey to evaluate how light color gradients affect emotions
No full textThis article explores the hypothesis that light, through different color gradients within it, can influence individuals' moods and emotions while doing simple operations like reading a text. This premise is rooted in the theory of color psychology, which suggests that colors can evoke certain emotions and behaviors. Light, being a spectrum of colors, may thus have the potential to influence mood and emotions, particularly during reading when the reader's engagement is high and they are more susceptible to subtle environmental cues. To test this hypothesis, this study employs a series of psychological questionnaires designed to measure participants' emotions, arousal, and anxiety levels. These questionnaires are administered after exposure to different lighting conditions, with varying brightness levels, CCTs, and color gradients. The aim is to establish a correlation between the lighting conditions and the emotional and behavioral responses of the participants. The research builds on previous studies that have demonstrated the influence of light on mood and cognitive performance. Küller (Küller et al., 2006) found that light quality affects employees' mood and well-being in work environments. Knez (Knez, 2001) highlighted how different color temperatures of light can influence cognitive performance and mood. Recent research (Bortolotti et al., 2022) has delved deeper into the influence of perceived color lightness on psychological functions. This research investigates how the perception of color lightness can affect various psychological processes, adding another layer to our understanding of the complex relationship between light, color, and human psychology. The study examines how light, particularly its color and intensity, can influence mood and emotions through its impact on circadian rhythms and the production of hormones such as melatonin and serotonin. Many researches have shown that intrinsically photosensitive retinal ganglion cells (ipRGCs) play a crucial role in this interaction, influencing circadian rhythms and acute behavioral responses to light. As a premise for this research, we have raised the question of whether colour and light affect physiology and psychology in proportional ways. Our research suggests a complex interplay between the physical properties of light and colour and their psychological and physiological effects, highlighting the need for a nuanced understanding of these relationships. The findings of this study could have implications for various fields; optimizing lighting conditions in education and office settings could enhance reading comprehension and productivity. In conclusion, this article presents a comprehensive investigation into the potential influence of light, through its color gradients, on individuals' moods and emotions during text reading. Integrating psychological measures with exploring physiological mechanisms provides a thorough and credible understanding of this phenomenon
Comportamento di alcune specie di Aegilops e di Triticum nei confronti di alcune razze fisiologiche di Puccinia recondita Rob. ex Desm. f. sp. tritici e di P. graminis Pers. f. sp. tritici
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Sistemi di rappresentazione cromatica cinetica nelle esperienze di Visual Music
No full textIl testo confronta alcune esperienze significative in atto di
rappresentazione, proiezione, di luci colorate organizzate su principi musicali che, pur utilizzando tecnologie digitali evolute, sorprendentemente riprendono nei principi alcune celebri esperienze storiche (pensiamo al clavecin oculaire di Castel).
Nel fare questo si avvale dell’esperienza e del materiale video raccolto in occasione di MuVi. Video and moving image on synesthesia and visual music, un evento che l’autore ha diretto in collaborazione con M. José de Cordoba, organizzato dalla
Fondazione Internazionale Artecittà, con la collaborazione del Politecnico di Milano e dell’Università di Granada in concomitanza delle edizioni del convegno internazionale Synaesthesia: Science & Art (la prima edizione nel 2007, la seconda
nel 2009, entrambe a Granada, la terza nel 2012 presso l’Università di Almeria, in Spagna)
L’influenza del colore nella progettazione dei componenti solari attivi e passivi dell’involucro edilizio
No full textNella progettazione architettonica le scelte cromatiche derivano prevalentemente da ragioni estetiche, sebbene abbiano implicazioni dirette sull’efficienza energetica dell’edificio. Nel recente passato quest’aspetto è stato spesso trascurato. Oggi l’applicazione dei concetti legati all’efficienza energetica sta condizionando la colorazione degli edifici, soprattutto delle coperture, con risultanze cromatiche non del tutto controllate e a volte non attese. Da una
parte l’introduzione di nuovi componenti solari attivi, come i pannelli fotovoltaici (FV), ha mutato drasticamente la resa cromatica degli involucri richiedendo riflessioni approfondite sul concetto di progetto integrato. Dall’altra si è sviluppata l’idea che la colorazione dei componenti d’involucro costituisca un fattore influente sul rendimento energetico complessivo degli edifici. In definitiva, il progetto di tali componenti richiede oggi un’analisi accurata delle caratteristiche cromatiche. Questo contributo si propone di offrire alcune riflessioni progettuali in ambito architettonico sul rapporto tra l’efficienza energetica di componenti solari attivi – cioè impiantistici – e passivi di involucro e il colore, considerato secondo parametri opportuni
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