Light Pollution & Public Lighting

- Mar 23, 2017-

Luminous Pollution is damaging human health and damaging ecosystems around the world, yet the issue has received little attention.

 

In the artificial illumination of the public space we must take great care and initially seek information about what we are illuminating and which actors are involved in this equation among humans, circulations, plants, animals and vehicles.

 

Each of them has different needs.

 

We know that light is largely responsible for photosynthesis in plants during the day, but plants also breathe, and do so at night, and in the dark.

 

Artificial lighting interrupts this process and modifies the flowering of the trees, often harming its development and weakening its growth.

 

It is not the only drawback, several sources produce UV in the spectrum range of insect vision, providing a lure factor for some very unwanted insects such as termite, which installs and compromises the trees and the safety of people.

 

Some sources also produce a lot of heat, and consequently, severe burns that can compromise the life of several species.

 

I always recommend the use of more yellow light because the yellow radiation is barely visible to most insects, which do not see the red spectrum.

 

Best to always use in nighttime environments and in landscape lighting sources below 3,000K by going to the amber shades in the light of the fountains, choosing fountains with low UV emission or using suitable filters. It is also necessary that the luminaire is adequate, much attention to the dazzling caused by the source.

 

It is necessary to take care with the cut-off of the luminaire to always have no-glare protection and to illuminate only what is necessary, there are several studies that demonstrate the dangers of invasive light in the windows, called light pollution , Which ultimately hamper sleep at night.

 

The light interrupts the production of melatonin, so necessary for the regeneration of our body during sleep.

 

The yellow light is always healthier, our circadian cycle processes a rhythm composed of approximately 12 hours of absolute darkness and a 12-hour process throughout the day where the light varies from 2,400 Kelvin at dawn, 2,700 at dawn, around 5,000 Kelvin at noon and lowering again to warm light in the afternoon. With this low color temperature of light, the body prepares to produce the melatonin hormone at dusk. White light exposure activates our photoreceptors and unbalances the circadian cycle. Invasive light entering through the windows at night caused by public or private lighting is prohibited in many countries.

 

Many public managers have contracted LED lighting for their cities in search of energy saving, but they do not always take care of the quality of the luminaires, we must include this discussion in the agendas of our cities, besides saving energy, we must propose lighting solutions Less invasive, minimize damage to the environment, and minimize damage to ourselves with due care with the color temperature of the light sources and quality of the luminaires against the glare.

 

There is always a right way to light, and in lighting we must take some care because from a healthier point of view we should simply pick up the night and not enlighten, but it is a utopian solution and due to the real needs of modern nightlife, the Ideal is to study case by case to propose the best solution for correct lighting; Humans, birds, rodents, insects, mammals and amphibians, each of which has its evolutionary characteristics and requires different care with the illumination of the external areas.

 

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