LED Technology Enhance The Light Pollution In The Night Sky
11/25/2017
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A rare view of the bright sky:
To see a sky like this, people now have to go to distant places. To a location far from civilization, in the quiet, seaside or in the mountains. Wherever there is a human being, the sky is always illuminated the artificial light. As a result: the light fading and possibly the star. the track again visible.LED light: lighter and less expensive
The latest lamp type, highly energy efficient, so more and more used. And there are other effects: for street lighting is often used to cool white light with different wavelengths. The light-flooded this strengthening light pollution.Protection zone: turn off the light!
Observatory European Southern Observatory (ESO) is located in a protected zone, specifically in Chile. Here, it is prohibited to install artificial light outdoors. ESO is located far from human habitation. But the shots in the near City of trying to reduce light pollution. Cities now more yellow and warm light for street lighting.Previous Image ...
Scientists at the research center of Germany for terrestrial science, Institute of Leibnitz and the University of Exeter (UK) and Boulder (Colorado/US) using satellite data and imagery from the international space station-ISS to observe changes. This is the view from the ISS over the city of Calgary, Canada year 2010.And afterwards
This is a picture taken from the same perspective of 2015. It can be seen that the lighting system was replaced in all parts of the city. The light is now more white. The number of streets is also growing. Infrared Radiometer could not measure light intensity despite growing completely. The problem: the instrument could not recognize the blue spectrum.Detect increased
The instruments used were Infrared Radiometer image visible (VIIRS). Resolution 750 meters. The data shows the intensity of the artificial light from an external source increased by an average of 2.2% from the year 2012 to 2016.What is the relationship of light with the economy?
Globally, the increase in the emission of light correlates directly with the increase in the gross domestic product for each country. The biggest improvement was detected in a number of countries threshold of the industry, with high economic conjuncture.Light change clock organisms
Artificial light alters the rhythm of living animals and plants. Natural sleep patterns of birds that live in the city has changed. The plants are exposed to the artificial light phase of development so more slowly.Smart lights
The question is: does the street lights should be lit up all night? Although LEDs are energy efficient, still better if turned off if not needed. Smart street lights are the best solution: the lamp is activated if the sensor captures human movement. If the emergency lights, and is already sufficient. Author: Fabian Schmidt.Source: www.bankaam.net
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