| Records |
| Author |
Boyce, P.R. |
| Title |
Review: The Impact of Light in Buildings on Human Health |
Type  |
Journal Article |
| Year |
2010 |
Publication |
Indoor and Built Environment |
Abbreviated Journal |
Indoor and Built Environment |
| Volume |
19 |
Issue |
1 |
Pages |
8-20 |
| Keywords |
Human Health; indoor light; circadian disruption; shift work; oncogenesis; Review |
| Abstract |
The effects of light on health can be divided into three sections. The first is that of light as radiation. Exposure to the ultraviolet, visible, and infrared radiation produced by light sources can damage both the eye and skin, through both thermal and photochemical mechanisms. Such damage is rare for indoor lighting installations designed for vision but can occur in some situations. The second is light operating through the visual system. Lighting enables us to see but lighting conditions that cause visual discomfort are likely to lead to eyestrain. Anyone who frequently experiences eyestrain is not enjoying the best of health. The lighting conditions that cause visual discomfort in buildings are well known and easily avoided. The third is light operating through the circadian system. This is known to influence sleep patterns and believed to be linked to the development of breast cancer among night shift workers. There is still much to learn about the impact of light on human health but what is known is enough to ensure that the topic requires the attention of all those concerned with the lighting of buildings. |
| Address |
Rensselaer Polytechnic Institute, New York, USA |
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Edition |
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| ISSN |
1420-326X |
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IDA @ john @ |
Serial |
292 |
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| Author |
LeGates, T.A.; Fernandez, D.C.; Hattar, S. |
| Title |
Light as a central modulator of circadian rhythms, sleep and affect |
Type |
Journal Article |
| Year |
2014 |
Publication |
Nature Reviews. Neuroscience |
Abbreviated Journal |
Nat Rev Neurosci |
| Volume |
15 |
Issue |
7 |
Pages |
443-454 |
| Keywords |
Human Health; photobiology; circadian disruption; asynchronization; sleep; mood; Review |
| Abstract |
Light has profoundly influenced the evolution of life on earth. As widely appreciated, light enables us to generate images of our environment. However, light – through intrinsically photosensitive retinal ganglion cells (ipRGCs) – also influences behaviours that are essential for our health and quality of life but are independent of image formation. These include the synchronization of the circadian clock to the solar day, tracking of seasonal changes and the regulation of sleep. Irregular light environments lead to problems in circadian rhythms and sleep, which eventually cause mood and learning deficits. Recently, it was found that irregular light can also directly affect mood and learning without producing major disruptions in circadian rhythms and sleep. In this Review, we discuss the indirect and direct influence of light on mood and learning, and provide a model for how light, the circadian clock and sleep interact to influence mood and cognitive functions. |
| Address |
1] Johns Hopkins University, Department of Biology, Baltimore, Maryland 21218, USA. [2] Johns Hopkins University, Department of Neuroscience, Baltimore, Maryland 21218, USA |
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English |
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| ISSN |
1471-003X |
ISBN |
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| Notes |
PMID:24917305 |
Approved |
no |
| Call Number |
IDA @ john @ |
Serial |
299 |
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| Author |
Bará, S.; Nievas, M.; Sanchez de Miguel, A.; Zamorano, J. |
| Title |
Zernike analysis of all-sky night brightness maps |
Type |
Journal Article |
| Year |
2014 |
Publication |
Applied Optics |
Abbreviated Journal |
Appl Opt |
| Volume |
53 |
Issue |
12 |
Pages |
2677-2686 |
| Keywords |
modeling; light at night; light pollution; all-sky; Zernike polynomials; image decomposition; sky brightness |
| Abstract |
All-sky night brightness maps (calibrated images of the night sky with hemispherical field-of-view (FOV) taken at standard photometric bands) provide useful data to assess the light pollution levels at any ground site. We show that these maps can be efficiently described and analyzed using Zernike circle polynomials. The relevant image information can be compressed into a low-dimensional coefficients vector, giving an analytical expression for the sky brightness and alleviating the effects of noise. Moreover, the Zernike expansions allow us to quantify in a straightforward way the average and zenithal sky brightness and its variation across the FOV, providing a convenient framework to study the time course of these magnitudes. We apply this framework to analyze the results of a one-year campaign of night sky brightness measurements made at the UCM observatory in Madrid. |
| Address |
Ãrea de Óptica, Dept. de FÃsica Aplicada, Fac. de FÃsica, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Galicia, Spain |
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Optical Society of America |
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English |
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| ISSN |
0003-6935 |
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| Notes |
PMID:24787595 |
Approved |
no |
| Call Number |
IDA @ john @ |
Serial |
318 |
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| Author |
Sweater-Hickcox, K.; Narendran, N.; Bullough, J.; Freyssinier, J. |
| Title |
Effect of different coloured luminous surrounds on LED discomfort glare perception |
Type |
Journal Article |
| Year |
2013 |
Publication |
Lighting Research and Technology |
Abbreviated Journal |
Lighting Research and Technology |
| Volume |
45 |
Issue |
4 |
Pages |
464-475 |
| Keywords |
perception; subjective; LED; LED lighting; spectral power distribution; SPD |
| Abstract |
Recently, there has been increased interest in energy-efficient lighting as energy resources become higher in demand. Anecdotal evidence suggests that certain populations believe light-emitting diodes (LED) produce more glare than traditional technologies. This may be due to a number of factors such as spectral power distribution (SPD), source luminance, or beam intensity distribution. A study was conducted to assess the effect of different SPDs on the perception of discomfort glare from an LED source. For the range of conditions evaluated, the presence of any luminous surround significantly reduced the perception of discomfort glare from the LED array. The blue luminous surround reduced discomfort glare perception significantly less than the white or the yellow luminous surrounds. The implications for solid-state lighting systems are discussed. |
| Address |
Lighting Research Center, Rensselaer Polytechnic Institute, Troy, NY, USA |
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Series Issue |
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Edition |
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| ISSN |
1477-1535 |
ISBN |
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no |
| Call Number |
IDA @ john @ |
Serial |
338 |
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| Author |
Davies, T.W.; Duffy, J.P.; Bennie, J.; Gaston, K.J. |
| Title |
The nature, extent, and ecological implications of marine light pollution |
Type |
Journal Article |
| Year |
2014 |
Publication |
Frontiers in Ecology and the Environment |
Abbreviated Journal |
Frontiers in Ecology and the Environment |
| Volume |
12 |
Issue |
6 |
Pages |
347-355 |
| Keywords |
Ecology; light pollution; oceans; marine; ecology; ecosystem; Review |
| Abstract |
Despite centuries of use, artificial light at night has only recently been recognized as a cause for environmental concern. Its global extent and ongoing encroachment into naturally lit ecosystems has sparked scientific interest into the many ways in which it may negatively affect human health, societal attitudes, scientific endeavors, and biological processes. Yet, perhaps because sources of artificial light are largely land based, the potential for artificial light pollution to interfere with the biology of the ocean has not been explored in any detail. There is little information on how light pollution affects those species, behaviors, and interactions that are informed by the intensity, spectra, and periodicity of natural nighttime light in marine ecosystems. Here, we provide an overview of the extent of marine light pollution, discuss how it changes the physical environment, and explore its potential role in shaping marine ecosystems. |
| Address |
Environment and Sustainability Institute, University of Exeter, Cornwall, UK |
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Edition |
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| ISSN |
1540-9295 |
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no |
| Call Number |
IDA @ john @ |
Serial |
365 |
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