Recorded levels indicated that maximum horizontal illuminance never exceeds 60 lx.
Magda Sibley 2018, 'Let There Be Light! Investigating Vernacular Daylighting in Moroccan Heritage Hammamsfor Rehabilitation, Benchmarking and Energy Saving', Sustainabilityhttps://www.mdpi.com/2071-1050/10/11/3984. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Peak gain of the culture growth was observed under 400 lx.
Y. О. Pavlova, S. P. Gudz', S. О. Gnatush 2007, 'Influence of environmental factors on growth and pigment synthesis by purple thiobacteria',Vìsnik Dnìpropetrovsʹkogo Unìversitetu: Serìâ Bìologìâ, Ekologìâhttp://ecology.dp.ua/index.php/ECO/article/view/254. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Dark-adapted pupil size (<1 lx) was first measured.
Shigekazu Higuchi, Akiko Hida, Sei-ichi Tsujimura, Kazuo Mishima, Akira Yasukouchi,Sang-il Lee, Youhei Kinjyo, Manabu Miyahira 2013, 'Melanopsin gene polymorphism I394T is associated with pupillary light responses ina dose-dependent manner.', PLoS ONEhttp://europepmc.org/articles/PMC3610661?pdf=render. Retrieved from PLOS CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
One flume was exposed to strong (416 lx) artificial light at night.
Elizabeth K. Perkin, Franz Hölker, Stefan Heller, Rüdiger Berghahn 2014, 'Artificial light and nocturnal activity in gammarids', PeerJhttps://peerj.com/articles/279.pdf. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Prior to each lighting condition, subjects remained in the dark (< 1 lx at the cornea) for 60 minutes.
Plitnick Barbara, Bierman Andrew, Figueiro Mariana G, Rea Mark S 2009, 'Preliminary evidence that both blue and red light can induce alertness at night',BMC Neurosciencehttp://www.biomedcentral.com/1471-2202/10/105. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The images were acquired at a daytime illumination of 52,000 lx and a night illumination of 13 lx.
Hyun-Woo Cho, Hyuk-Jin Yoon, Jae-Chan Yoon 2016, 'Analysis of Crack Image Recognition Characteristics in Concrete Structures Dependingon the Illumination and Image Acquisition Distance through Outdoor Experiments', Sensorshttp://www.mdpi.com/1424-8220/16/10/1646. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The light-damaged model was formed by exposing to white light (2 200±300)lx for 6h.
Yun-Yun Zhou, Chang-Zheng Chen, Yu Su, Lu Li, Zuo-Hui-Zi Yi, Hang Qi, Ming Weng, Yi-QiaoXing 2014, 'Effect of EGb761 on light-damaged retinal pigment epithelial cells', International Journal of Ophthalmologyhttp://www.ncbi.nlm.nih.gov/pmc/articles/PMC3949451/. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)