LIGHT POLLUTION

. [Virtual Presenter] Hi everyone, in this video we will explain about the light pollution, hope you guys are ready.

[Audio] There will be an introduction, definition, types of light pollution.

[Audio] Impact of light pollution, and reduction of light pollution that we wlill talk about in this video.

[Audio] Most of the world's environmental problems may be traced back to human activity and its by-products. Think about the car, or that amazing material we created, plastic. Plastic contamination in our seas is a huge threat to marine biodiversity, and automobile emissions are also a major source of air pollution that contributes to climate change. What about one of the most celebrated human inventions, the lightbulb? After the sun goes down, electric lights may be a welcome sight, guiding us safely inside while adding a cozy ambience to our homes. But like carbon dioxide emissions and trash, too much of a good thing is beginning to destroy the ecology. Human health, animal behavior, and our capacity to view stars and other celestial objects are all negatively impacted by light pollution, or the excessive or improper use of artificial light in the outdoors.

[Audio] Light pollution occurs when there is an abundance of artificial light, or when that light is used inefficiently or in the wrong part of the electromagnetic spectrum . Light pollution may be seen as both a phenomenon caused by one particular source or kind of pollution and a factor in the cumulative effects of many other types of pollution. In many cases, reducing light pollution is as simple as switching to more suitable lightbulbs or reorienting your fixtures..

[Audio] The light pollution blindfolds every star. Quote by carol ann duffy.

[Audio] What is light pollution? Light pollution is the presence of artificial, human-made light in normally gloomy environments. The phrase is most often associated with the outside environment and surroundings, although it is also used to describe artificial light indoors. Light pollution is a consequence of industrial society. Its sources include external and interior building illumination, advertising, outdoor area lighting (such as parking lots), offices, factories, streetlights, and lit athletic stadiums..

[Audio] Light trespass, glare, over-illumination and light clutter are the examples of light pollution..

[Audio] By beaming through a neighbor's fence, for instance, light might trespass into your land. When bright outside light shines in through a window, it may disrupt a person's sleep and cause other issues. the Federal Communications Commission keeps an Antenna Structure Registration database with information that citizens may use to identify offending structures and provides a mechanism for processing citizen inquiries and complaints in cases of light trespass by white strobe lighting from communication towers in excess of FAA minimum lighting requirements.

[Audio] A few factors contribute to inefficient lighting, including: consensus-based standards or norms that are not based on vision science. improper design, by specifying higher levels of light than needed for a given visual task. incorrect choice of fixtures or light bulbs, which do not direct light into areas as needed. And improper selection of hardware to utilize more energy than needed to accomplish the lighting task, incomplete training of building managers and occupants to use lighting systems efficiently and inadequacy of lighting controls..

[Audio] The term "blinding glare" is used to describe the visual impairment induced by gazing directly at the Sun. It may cause total blindness and lasting visual impairment. Blindness from incoming automobile lights, light dispersion in fog or the eye, reduced contrast, and reflections from print and other dark places that turn them bright are all examples of disability glare. Discomfort glare is bothersome and aggravating at best, but it seldom creates a hazardous scenario. Fatigue may result from prolonged exposure to this condition.

[Audio] Next about light clutter. Excessive clusters of lights are referred to as "light clutter. Badly planned streetlights or highways lined with brilliantly illuminated billboards are a certain way to draw attention to the chaos that plagues them. The lights' location and design may even be meant to distract drivers and lead to accidents.

[Audio] So, what are the consequences of light pollution?.

[Audio] One of it is luminous sky of earth. Astronomers are particularly concerned with sky glow pollution as it reduces their ability to view celestial objects. More than 80 percent of the world's population, and 99 percent of Americans and Europeans, live under sky glow. It sounds pretty, but sky glow caused by anthropogenic activities is one of the most pervasive forms of light pollution.

[Audio] Many states have passed laws to regulate outdoor lighting, and manufacturers have created high-efficiency light sources that conserve energy and decrease light pollution. Individuals are encouraged to use outdoor lighting only when and where it is required, to ensure that outdoor lights are appropriately shaded and directed downward rather than upward into the sky, and to cover window blinds, shades, and curtains at night to keep light inside..

[Audio] In the absence of light, the hormone melatonin is secreted in the body to help regulate sleep and wake cycles. Lack of sleep, exhaustion, headaches, tension, and worry are just some of the negative side effects of being exposed to too much light at night. Melatonin production has been demonstrated to be suppressed by artificial light, particularly blue light. Light-emitting diodes ( LEDs), which have gained popularity in homes, factories, and cities owing to their cheap cost and high efficiency, generate a blue light..

[Audio] WE NEED TO REDUCE LIGHT POLLUTION!. WE NEED TO REDUCE IT!!!.

[Audio] We can reduce light pollution by Using the lowest possible-intensity light sources to achieve one's lighting goals. Using a timer, an occupancy sensor, or turning the lights off manually when they are not needed. Refining lighting systems to provide more targeted illumination with fewer unintended consequences. Changing the lighting setup such that the emitted light wavelengths are ones that are less prone to produce severe light pollution..

[Audio] In a nutshell, grassroots campaigns for environmental causes may take numerous forms, and many of them are creative, genuine, and brave. However, the example of light pollution stands out since it affects every major city in the globe. despite having said that " light pollution is perhaps the forgotten one when talking about the innumerable kinds of environmental issues that affect our health," it hopes, by now, to have been eye-opening enough and inspiring enough to have spurred a new stimulus in all readers, ultimately creating new light pollution ambassadors, with the ultimate goal of reducing the negative effects of light pollution.

[Audio] That's all from us, thank you for your time!.