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Artificial light(ing) or electric light(ing)?
KTH, School of Architecture and the Built Environment (ABE), Architecture, Lighting Design.ORCID iD: 0000-0003-2562-2108
KTH, School of Architecture and the Built Environment (ABE), Architecture, Lighting Design.ORCID iD: 0000-0002-2443-7640
2022 (English)In: The 8th International Light Symposium: Re-thinking Lighting Design in a Sustainable Future, Copenhagen, Denmark / [ed] IOP, Bristol: Institute of Physics Publishing (IOPP), 2022, Vol. 1099, p. 1-11Conference paper, Published paper (Refereed)
Abstract [en]

Researchers and designers use the words "artificial" or "electric" to describe lighting products, design, or research related practices, and there appear to be differing opinions about which is the more appropriate term. Generally, there are challenges with a common use of language and vocabulary in interdisciplinary research and this might be also valid for design and research in lighting design across different disciplines. The authors were educated in opposing practices of using "electric" lighting vs "artificial" lighting; this started a discussion and the conceptualization of this article. The paper explores, summarizes and discusses through literature review and a survey the concepts described and conveyed by both terms in different disciplines. Interestingly we could find differences among and between disciplines and professional backgrounds. This might indicate that the education and nomenclature in the field influences the use of terms. We found a tendency to refer to light sources either in terms of the energy used to generate the light, e.g. electric light or gaslight, but also in terms of the effect that it evokes, e.g. candle light is defined natural. Generally, a common lighting glossary could be developed through continuous discussion and studies. As today's complex questions are discussed in interdisciplinary teams, a common language might promote effective communication and stimulate sustainable solutions.

Place, publisher, year, edition, pages
Bristol: Institute of Physics Publishing (IOPP), 2022. Vol. 1099, p. 1-11
Series
IOP Conference Series: Earth and Environmental Science, ISSN 1755-1307
Keywords [en]
perception, language, lighting vocabulary, lighting design, interdisciplinary
National Category
Architecture Design
Research subject
Architecture
Identifiers
URN: urn:nbn:se:kth:diva-323109DOI: 10.1088/1755-1315/1099/1/012039Scopus ID: 2-s2.0-85143215274OAI: oai:DiVA.org:kth-323109DiVA, id: diva2:1727486
Conference
The 8th Light Symposium, Aalborg University, 21st-23rd September 2022
Note

QC 20230117

Available from: 2023-01-16 Created: 2023-01-16 Last updated: 2024-05-02Bibliographically approved
In thesis
1. Light Rhythms: Exploring the Perceptual and Behavioural Effects of Daylight and Artificial Light Conditions in a Scandinavian Context
Open this publication in new window or tab >>Light Rhythms: Exploring the Perceptual and Behavioural Effects of Daylight and Artificial Light Conditions in a Scandinavian Context
2024 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

This compilation thesis collects multidisciplinary work on the study of the impact of light rhythms on perception and behaviour. The thesis was structured to answer and discuss the questions: “How does a person feel and behave inan illuminated space?” and “Do variable light conditions influence perception, appraisal and motion?”. In order to answer the questions, I applied methods from design, psychology and behavioural science, conducted literature reviews and performed two experimental studies. In response to the first question, the outcome of the five papers included in the thesis show that light and lighting rhythms elicit specific acute and long-term effects. These effects impact on these categories of aspects: visual and perceptual, appraisal and experience, behavioural and physiological. To structure and visualize these diverse aspects, I introduce the CLAPP framework: Context Light(ing) Action (behaviour), Perception, Person. The framework highlights the complex interplay between light, environment, and human response, by displaying features related to spatial and light rhythms, effects of light on mind and body, and personal features. The framework can provide structure and direction for education and research activities within the scope of Architectural Lighting Design. In response to the second research question, results from the experimental studies reveal that, even after eliminating view and sunlight, variable daylight conditions elicit better mood, higher pleasure, and influence motion, compared to artificial light conditions. The results of this thesis may contribute to achieving the UN sustainability goals, specifically to improve the well-being of the population (SDG3), to design a built-environment that is safe and resilient (SDG 11), and to promote the uses of affordable and clean energy (SDG 7). Building on the experience gained during this thesis work, I am confident that multidisciplinary collaboration will enable to integrate the diverse aspects included in the CLAPP framework, paving the way for the design of spaces that are both resilient and supportive of health.

Abstract [sv]

Denna sammanläggningsavhandling samlar tvärvetenskapligt arbete om studien av ljusrytmers inverkan på perception och beteende. Avhandlingen var strukturerad för att besvara och diskutera frågorna: “Hur känner och beter sig en person i ett upplyst rum?” och “Påverkar varierande ljusförhållanden perception, bedömning och rörelse?”. För att besvara frågorna använde jag metoder från design, psykologi och beteendevetenskap, och genomförde litteraturstudier och två experimentella studier. Som svar på den första frågan visar resultaten från de fem artiklar som ingår i avhandlingen att ljus och ljusrytmer framkallar specifika direkta och långsiktiga effekter. Dessa effekter påverkar följande kategorier av aspekter: visuella och perceptuella, bedömning och upplevelse, beteendemässiga och fysiologiska. För att strukturera och visualisera dessa olika aspekter introducerar jag ramverket CLAPP: Context Light(ing) Action (behaviour), Per-ception, Person. Ramverket belyser det komplexa samspelet mellan ljus, miljö och mänsklig respons genom att visa funktioner relaterade till rums- och ljusrytmer, effekter av ljus på sinne och kropp samt personliga egenskaper. Ramverketkan ge struktur och riktning för utbildnings- och forskningsaktiviteter inom området Architectural Lighting Design. Som svar på den andra forskningsfrågan visar resultaten från de experimentella studierna att varierande dagsljusförhållanden framkallar bättre humör och glädje, och påverkar rörelse, jämfört med artificiella ljusförhållanden, även efter att utsikt och solljus eliminerats. Resultaten av denna avhandling kan bidra till att uppnå FN:s hållbarhetsmål, särskiltatt förbättra befolkningens välbefinnande (SDG 3), att utforma en byggd miljösom är säker och motståndskraftig (SDG 11), och stödjar användningen av över-komlig och ren energi (SDG 7). Med utgångspunkt i erfarenheterna från detta examensarbete är jag övertygad om att tvärvetenskapligt samarbete kommer att göra det möjligt att integrera de olika aspekter som ingår i CLAPP-ramverket,vilket banar väg för utformningen av utrymmen som är både motståndskraftiga och stödjande för hälsa.

Place, publisher, year, edition, pages
KTH Royal Institute of Technology, 2024. p. 65
Series
TRITA-EECS-AVL ; 2024:32
Keywords
Lighting design, Context, Light, Behaviour, Perception of light, Perception of time, Associative aspects, Architecture, Daylight
National Category
Design Architecture Media and Communication Technology
Research subject
Media Technology
Identifiers
urn:nbn:se:kth:diva-344946 (URN)978-91-8040-884-4 (ISBN)
Public defence
2024-04-29, https://kth-se.zoom.us/j/68660447128, Kollegiesalen, Brinellvägen 8, Stockholm, 13:00 (English)
Opponent
Supervisors
Funder
Bertil & Britt Svenssons Stiftelse för Belysningsteknik
Note

QC 20240405

Available from: 2024-04-05 Created: 2024-04-04 Last updated: 2024-04-15Bibliographically approved

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Favero, FedericoBesenecker, Ute

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