Saturday, 30 May 2015

Ultraviolet - UV

The sun's ultraviolet line
Sun, representing the warmth and vitality of filling. But you can know this but also an endless supply of hot fireball release different wavelengths of radiation, including we can not see, can not touch the UV light.

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Ultraviolet light is an electromagnetic wave, according to their different wavelengths of ultraviolet light can be divided into A, B, C categories. All C and most UV-B ultraviolet light is absorbed by the atmosphere, ultraviolet light to reach the ground mostly UV-A and UV small part B.
UV line with our health

Benefits of UV lines
The right amount of sunlight helps the body manufacture vitamin D, so that stronger bones, reducing the chance of fractures. Harmful effects of ultraviolet line

Excess exposure can cause sunburn and skin aging, the birth of wrinkles, but also increase the risk of skin cancer and cataracts. It estimated that about 80% of skin cancers are caused due to excessive exposure. Furthermore, the World Health Organization, there are two cases of cataracts may be associated with excessive exposure to UV related. So people should not underestimate the damage caused by ultraviolet possible.

UV index line
UV Index is an index measure of the impact of ultraviolet radiation on human skin, the higher the index, the greater the impact of ultraviolet radiation on the body.

World Health Organization put the UV index is divided into the following types of exposure series:


http://cdna.allaboutvision.com/i/sun-uv-index-211x292.jpg
http://www.aimatmelanoma.org/wp-content/uploads/prevention-the-ux-index-uv-protection-chart.jpg

 Sunscreen measures
 
To reduce UV damage caused by the body, the most important thing is to reduce exposure to direct sunlight the skin or eyes. UV index is high in the day, the public should avoid prolonged exposure to the sun.
  
In the sun, people should take the following protective measures:
  • Leaving most new meaning with ultraviolet index;
  • Select shady places have cover;
  • Child using an umbrella;
  • Wear long sleeves and wide loose garment;
  • Wear Kuo-brimmed hat;
  • Use energy UV blocking sunglasses;
  • Apply a broad spectrum sunscreen lotion can block UV-A and UV-B (UV-B associated with a sun protection factor of 15 or more), and then coated with sweating or swimming.
Open heart children to sunlight

Studies have shown that children suffer if exposure opportunities grow skin cancer will be higher. Therefore, do not allow children to stay long in the sun. To bring out the children, the parents should take advantage of hats, umbrellas, appropriate clothing and sunscreen to protect children and prevent them from harmful ultraviolet rays. In addition, parents should teach children about the sun from morning to security measures.

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