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Here's ur answer 》》》》

☆What is light pollution?☆


Light pollution is referred to as ‘pollution’ because it adversely affects the night sky, contaminating the darkness with light.

☆Causes of light pollution.☆

1. Electricity. The advent of electricity has enabled us to light our homes brightly through the night. Very often, people act carelessly and illuminate very bright lights at homes and business places – no matter what the hour.

2. 24 hour culture. People are becoming more and more accustomed to restaurants, bars, shops, entertainment and transport networks being available right round the clock – this results in businesses staying lit up 24/7. The effect is cumulative: when one business stays open 24 hours, other businesses often feel that they must follow suit in order to compete for profits.

3. Population density. More and more people have moved to big cities over the last hundred years, and as a result their combined use of light has resulted in more and more light pollution.

4. Brighter bulbs. As bulbs get brighter, the amount of light pollution that they cause increases. Light bulbs should be USED for simple illumination, but we have got too much used to over illumination.


☆Effects of light pollution.☆

1. Skyglow. Skyglow is the name for the reddish-yellow glow in the sky that persists throughout the night due to light pollution in the city below. Another type of glow is known as ‘gegenschein’: this refers to the way that the SUN’s rays illuminate gas and dust in the atmosphere causing a wide-ranging glow. Gegenschein is more pronounced in cities where the air is full of pollutants.

2. Disrupted sleep patterns. When it seems that the city never sleeps – neither can we. When the lights are on all through the night, we may find it HARD to sleep well or relax. Especially if we live with a street lamp BURNING outside our window. The pituitary gland in the human body responds to bright lights: when the light is bright, this gland will RELEASE chemical signals that cause us to feel awake, and when our surroundings are dark it releases signals that leave us feeling sleepy.

Light pollution is a very real problem. Just take a look at an aerial photo of the earth at night and you will see that many of our cities are so light polluted that they glow incredibly brightly in the darkness. Light pollution is disruptive to both human and animal life.

However, there are several simple ways that we can stop light pollution. So why not take a few positive steps today to diminish the amount of light pollution in your area, and encourage other people and businesses to do the same? That way, we will all be able to appreciate the beauty of a starry sky even if we live in one of the world’s big cities.


Hope it helps ☺⚡✌