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The popularity of LED bulbs that have become a symbol of energy conservation over the years has increased considerably. In India, the national LED program ‘Ujala’ is being operated by the Central Government to ensure availability of these bulbs to the public, under which LED bulbs are being provided on subsidy. But do you know that the use of LED bulbs is dangerous for us? In this article, we are giving a detailed description of those different aspects, on the basis of which it can be said that why the use of LED bulbs is dangerous for us?
According to a report published in the German magazine ‘Science Advance’, due to artificial light, night darkness in the Earth is decreasing every year, the main reason behind which is the high use of LED bulbs. According to Professor Hodge of Arizona University, excessive use of LED bulbs is actually light pollution, whose negative effects can be seen on human health, ecosystem and astronomical research. Researchers used satellite radiometers called ‘Visible / Infrared Imager Radiometer Suite or VIIRS’ for measuring the brightness of the night on Earth, and in their report, in the report, artificial flashes have increased significantly on Earth in the night. According to this report, between the years 2012 and 2016, on the ground the average annual growth of 2.2% in outdoor glow has been recorded, which has been called the discrete rate.

What is light pollution?
Light pollution, also called photopollution or luminous pollution, is the excessive and mismanaged use of artificial outdoor lighting. Unmanaged light changes the color and asymmetry of the night sky, reduces the natural light of the stars and interrupts the circadian rhythm. This affects the environment, energy resources, wildlife, human and astronomical research.

In fact, the reason for the increase in light pollution from the LED bulb is that light generation requires less power for light, so people are using it more and more. In fact, the LED is being promoted with the aim of energy efficiency, but its negative effects are also visible.
Which areas of the world have high light pollution
According to a report published in German magazine, light pollution is increasing in 79 countries of the world and 16 countries are declining, while 39 countries have a level of light pollution. During the period in which it was researched, light pollution has decreased in countries affected by civil war like Yemen and Syria, and the situation of light pollution is stable in countries like USA and Spain. But due to the growth of economic activities in the emerging economies of South America, Africa and Asia, light emissions have increased, which has led to increased levels of light pollution. However, the most light-polluted country in the whole world is Hong Kong.
List of Particulate (particles) that contaminate the environment
Impact of light pollution
1. Circadian rhythm in humans, due to light pollution, symptoms of irregularity, depression and diabetes are visible. Circadian rhythm is a clock inside the human body that follows our brain and revolves around regular intervals between sleep and alertness. Light pollution produces disruption in this rhythm, which promotes depression. Apart from this, natural hormones called Melatonin, which regulates our sleeping and waking activity, are affected by light pollution.
2. Light pollution affect the breeding habits of animals, thereby affecting biodiversity. Animals such as bats, deer, raccoon, coyotes search their food at night. But due to light, their food chain will be affected and they may be themselves victims. Thereby affecting their reproductive capacity, which will reduce their numbers.
3. Many birds die by colliding with a large lighthouse, and due to high light, such incidents are increasing. In India, ‘Jatiganga of Assam’ is notorious for this, which is also called ‘Suicide of the birds’ or ‘Avian Harakiri’.

4. Marine feminine turtle gives the egg in the night itself, but due to the light, it will not be able to get the safe place to give the egg.
5. Astronomers study celestial bodies at night only, but due to high light they have trouble finding these objects.
Solution of light pollution
According to scientists, for the purpose of light pollution, the use of low light bulbs in different countries should be encouraged.

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