Lighting Quality Archives - All Things Lighting® Association https://www.allthingslighting.org/category/academic-articles-and-research/lighting-quality/ Illuminating the Complicated! Fri, 01 May 2026 20:12:53 +0000 en-US hourly 1 https://www.allthingslighting.org/wp-content/uploads/2023/08/cropped-ATLA-favicon2-32x32.jpg Lighting Quality Archives - All Things Lighting® Association https://www.allthingslighting.org/category/academic-articles-and-research/lighting-quality/ 32 32 Intro to Horticultural Lighting https://www.allthingslighting.org/intro-to-horticultural-lighting/ https://www.allthingslighting.org/intro-to-horticultural-lighting/#respond Wed, 04 Feb 2026 17:40:12 +0000 https://www.allthingslighting.org/?p=5282 Introduction This article is based on a presentation I had the pleasure of delivering at the recent Canada Light Expo 2025 in Toronto. My aim with the presentation was to offer a brief overview of some key aspects of horticultural lighting and to highlight how it differs from architectural lighting. I was surprised by the […]

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]]> https://www.allthingslighting.org/intro-to-horticultural-lighting/feed/ 0 Lighting Uniformity in Horticulture https://www.allthingslighting.org/lighting-uniformity-in-horticulture/ https://www.allthingslighting.org/lighting-uniformity-in-horticulture/#respond Fri, 24 Jun 2022 03:34:28 +0000 https://www.allthingslighting.org/?p=2824 Written in 2015, “Greenhouse Design and Control” (Ponce et al. 2015) is extraordinarily comprehensive in its coverage of greenhouse design issues, from site selection through structural load bearing analysis and ventilation technologies to greenhouse automation using adaptive neural fuzzy inference systems. On the topic of greenhouse lighting, however, it has only this to say: “The light level in the greenhouse should be adequate and uniform for crop growth.”

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]]> https://www.allthingslighting.org/lighting-uniformity-in-horticulture/feed/ 0 The Kruithof Curve https://www.allthingslighting.org/the-kruithof-curve/ https://www.allthingslighting.org/the-kruithof-curve/#respond Fri, 15 Feb 2019 22:50:02 +0000 https://www.allthingslighting.org/?p=284 Ian Ashdown, P. Eng., FIES, Senior Scientist, SunTracker Technologies Ltd.  Published: 2015/01/12 UPDATE 16/04/09 – This metastudy: Fotois, S. 2106. “A Revised Kruithof Graph Based on Empirical Data,” Leukos. (Published online 08 April 2016, DOI 10.1080/15502724.2016.1159137.) critically examined 29 studies in which the Kruithof curve was investigated. The author concluded that “… these [studies] do […]

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