Top Online Schools For Early Childhood Education

Why do we own sunglasses and why should we particularly choose blue sunglasses? Did you know that the ozone layer protects all life forms on earth against excessive exposure to the sun's ultraviolet (UV) rays? The thinning of the ozone layer caused increased UV reaching the earth's surface. It is therefore prudent to protect against harmful sunlight when working or when we have fun outdoors, and it's easy to do. Visit to catch up with blue sunglasses for women at 40% off sale at veloarabia.com/ for a crazy whim.

The best protection is to stay in the shade and wear protective clothing and a wide-brimmed hat. Antisoleil should also be applied to the exposed skin- a cream whose protection factor (SPF) is at least 15. 

The light and UV

Light is a form of energy called electromagnetic energy! It travels through space as a wave. The electromagnetic spectrum includes a very wide range of energy wavelengths. One part of this spectrum is visible. Our eyes perceive it as a gradation of colors from violet to red, passing through blue, green, yellow and orange. The sun is the most important light source for the earth. It is also a powerful source of electromagnetic energy outside the visible range of the spectrum. Forty-five per cent of solar energy reaches the earth as visible light; the rest is invisible rays. Blue sunglasses for women should be your pick.

There are two types of invisible sunlight. The infrared (IR) and ultraviolet (UV). These rays are also absorbed through the eyes. The IR rays have larger wavelengths than visible light; these are thermal rays, that is to say, they are heat-carriers. Half of solar energy reaches the earth as heat or infrared radiation. The Earth's atmosphere absorbs much of the ultraviolet rays from the sun. Only 5% of solar energy reaches the earth in the form of UV radiation. Compared to visible light, this radiation has a shorter wavelength, but contains a greater energy. UV band is divided into UV-C, UV-B and UV-A. The atmospheric ozone layer absorbs the UV-C rays do not reach the surface of the earth.

UV and eyes

UVB rays are the actual reason behind tanning, but can also cause skin cancer.  UV-A rays are also harmful to the eye. The thinning of the ozone layer and the fact that people are living longer increases the risk of high intensity exposure and short-term low-level exposure over time. Most adverse effects of UV-B and UV-A absorbed by the eye are additive. Therefore, the damage gradually increases and is not reversible. Finally, some people are more sensitive than others to UV. Stay away from falling in to such woes by making sure to get Blue sunglasses.