![]() LED sources can suppress melatonin secretion which affects on circadian rhythms, sleep disorders, problem of obesity and thyroid. High intense white light sources also produce problems seeing for safe driving and working at night. LED at colour temperature (CT) 4000K to 5000K contain high level of short wavelength blue light that can cause damage to retina of human eye. ![]() Broken CFLs and compact light tubes emit mercury in air which is produce hazards effect on human health. Some CFLs emits a short wavelength (254nm) ultraviolet (UV) radiation that causes different skin diseases. Shifting broadening the spectra of artificial light (white light) may leads adverse effect on human health. These light sources save much more electric energy as compared to incandescent bulbs and provide to improve colour rendering capability for humans. ![]() CFLs and LEDs are more efficient and cut carbon emission in environment. But to improve efficiency and to cut carbon dioxide (CO2) emission this old narrow spectral light sources are replaced by broader spectrum light sources such has high pressure sodium (HPS) lamp, compact fluorescent lamp (CFL), light emitting diode (LED). In 20 th century narrow spectrum incandescent electric light bulb and low pressure sodium (LPS) lamp has been widely used. The haze and the smog has become a part to the light pollution. Since LP is growing as a major problem in the Anthropocene epoch, it is high time to monitor the radiance, artificial pollution and impart appropriate steps to ameliorate the LP. The Bortle scaling of the major cities of India are mostly of class 8-9. The artificial, the ratio of natural radiance to artificial radiance have also increased more in Hyderabad, Calcutta and New Delhi cities. Radiance of the Chennai city was the highest followed by Mumbai and New Delhi. It is increasing 2.3%/annum in India from 1992 whereas the radiance in Delhi, Calcutta, Chenei, Bengluru, Hyderabad Mumbai and Ahamadabad have increased during 2014 to 2017 considering 2013 is the base year. LP in India is continuously increasing in almost all the cities and the whole country. The present work is the analysis of SQM results of NOAA VIIRS/DMSP world atlas map of LP from 1992. There is discoordination between its measurement, causes, effects and setting of ameliorative measures. There is a long gap between the study of LP parameters and its effect. The light pollution (LP) is caused by excess artificial light of human activities in Anthropocene epoch. Proper illumination enhances visibility, productive hours and encourage safety. The light pollution due to artificial lights can upset both (vitro and vivo) of human, disrupt ecosystem, affect natural circadian cycles of habitats, disorder the reproductivity, photoperiodism and growth metabolism of plants and microorganisms. ![]() Air, water and soil pollution have confirmed impact on Air, The air, water and soil pollution have confirmed impact on livings but the influence of light pollution on habitats comfort, nocturnal life forms and loss of panaroma of sky by city dwellers at the cost of diminishing energy resources is yet to be established. ![]()
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