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Harsh overhead lights can give you the sunken, ghoulish appearance of the undead – and you really don’t need them 
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How can architects use natural light in school designs? Read this article to learn the most important aspects of designing with daylight and why natural light in architecture is good for children’s overall health, wellbeing and not least their academic performance.
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We investigated physiological and subjective responses to morning light exposure of commercially available LED lighting with different correlated colour temperatures to predict how LED-based smart lighting employed in future learning environments will impact students. The classical markers of the circadian system (melatonin and cortisol), as well as the subjective perception of sleepiness, mood, and visual comfort, were compared. Fifteen university students underwent an hour of morning light exposure to both warm (3,500 K) and blue-enriched (6,500 K) white lights at recommended illuminance levels for classrooms and lecture halls (500 lux). The decline of melatonin levels was significantly greater after the exposure to blue-enriched white light. Exposure to blue-enriched white light significantly improved subjective perception of alertness, mood, and visual comfort. With regard to cortisol, we did not find a significant difference in the cortisol decrement between the two light conditions. Our findings suggest that the sensitivity of physiological and subjective responses to white LED light is blue-shifted. These findings, extending the already known effects of short-wavelength light on human physiology, reveal interesting practical implications. Blue-enriched LED light seems to be a simple yet effective potential countermeasure for morning drowsiness and dozing off in class, particularly in schools with insufficient daylight.
Peter Mellow's insight:
I attached the image of Charles H Moore's 'open air classrooms' from 1927 in Taranaki, NZ. I went to school in one of his classrooms in the 1970's. His goal was to let in light to assist with learning. Seems like almost 100 years later, his theory was correct! Vale Charles Moore!
Yet we build large lecture theatres with no natural light. Smart architects, very smart. Read the research!
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Welcome to the flattering world of frosted-glass table lamps, torchères and shaded sconces.
Peter Mellow's insight:
The best light for learning?
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In the last decade, during which personal computers have proliferated in the office, researchers have paid increased attention to lighting. Several studies have investigated the relationship of modern office lighting to the visual health, satisfaction and productivity of office workers.
The American Society of Interior Designers found that 68% of employees complain about the light in their offices.
A Silicon Valley study pointed out that 79% of VDT users want better lighting.
This degree of dissatisfaction is difficult to ignore. It confirms the need to identify the best methods of lighting the computerized office. Via Daniel Tan
Daniel Tan's curator insight,
February 15, 2013 3:25 AM
The impact of lighting on productivity - now you will see the light for why you are not as productive as expected! |
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Research shows that different types of lights can hurt or help your well-being. Here’s how to devise an optimal lighting strategy for your space.
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In an auditorium or lecture halls, there should be room for both unusual and everyday teaching. But whether it is a final test, a concert or a presentation, the light in the room must be able to be adapted so that the experience is optimal.
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We investigated physiological and subjective responses to morning light exposure of commercially available LED lighting with different correlated colour temperatures to predict how LED-based smart lighting employed in future learning environments will impact students. The classical markers of the circadian system (melatonin and cortisol), as well as the subjective perception of sleepiness, mood, and visual comfort, were compared. Fifteen university students underwent an hour of morning light exposure to both warm (3,500 K) and blue-enriched (6,500 K) white lights at recommended illuminance levels for classrooms and lecture halls (500 lux). The decline of melatonin levels was significantly greater after the exposure to blue-enriched white light. Exposure to blue-enriched white light significantly improved subjective perception of alertness, mood, and visual comfort. With regard to cortisol, we did not find a significant difference in the cortisol decrement between the two light conditions. Our findings suggest that the sensitivity of physiological and subjective responses to white LED light is blue-shifted. These findings, extending the already known effects of short-wavelength light on human physiology, reveal interesting practical implications. Blue-enriched LED light seems to be a simple yet effective potential countermeasure for morning drowsiness and dozing off in class, particularly in schools with insufficient daylight.
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Blue light will help boost your performance, while natural light can keep you in a good mood.
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