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Friday, October 3, 2014

What are ultraviolet rays UV?

The disadvantages of Ultraviolet rays;

What are advantages of Ultraviolet rays?

Ultraviolet rays UV are light waves which we cannot see with eyes, they are very similar to infrared or radio or micro waves.
1.    They are energetic forms of light, the most energetic light that can be formed or absorbed by molecular bonds;
2.    Ultraviolet UV rays have higher energies than visible light, but lower than X-rays or Gamma rays.  

Ultraviolet UV rays categorize:

1.    Ultraviolet UV rays are commonly sub categorized to UV-A the lower energy, used by humans to form vitamin D;
2.    UV-B the medium energy, which can damage DNA since the normal structures of people, animals, and plants are transparent to UV-B;
3.    Fortunately ozone blocks UV-B in the atmosphere;
4.    UV-C the most energetic can shatter and break oxygen and nitrogen molecules into their constituent atoms;
5.    And then some of the oxygen atoms form ozone.

Harms of Ultraviolet UV rays:

1.    UV rays are invisible rays that are part of the energy that comes from the sun;
2.    These rays can burn the eyes, skin, and hair if these parts of body are not well protected and undergo too much exposure to the sun;
3.    In the other hand UV rays are very useful for the ecosystem.

Benefits of UV rays:

1.    Among the benefit of UV rays is that these rays assist human bodies in making vitamin D, which strengthens bones, teeth and helps the bodies to build immunities against diseases such as Rickets and colon Cancer;
2.    UV rays are used to treat psoriasis disease, as the rays slow the growth of skin cells, preventing the outbreak of the itchy patches for which psoriasis is known.

Commercial uses of UV rays:

1.    There are many commercial uses of UV rays, including sterilization and disinfection;
2.    Some animals are able to see UV rays, and the UV vision helps bees to collect pollen from flowers.

Common effect of exposure to UV rays:

1.    Although the unlimited positive uses, UV rays rest very harmful for anybody who stays long times exposed to the sun without proper protection;
2.    The most common effect of exposure to UV rays is sunburn that is the damage caused to skin cells when they have absorbed too much energy from UV rays;
3.    Sunburn causes blood to rush into the affected area trying to cool the burn and the damage skin at last peels away;
4.    In addition to the burning pain on the skin, the sunburn can ultimately cause skin cancer.

Diseases caused by UV rays:

1.    Skin cancer is often caused by long exposure to UV rays, but can be occurred even if there is no evidence of sunburn;
2.    In the beginning eye damage caused by UV rays is painful or temporary blindness and blurred vision, but over time UV rays may lead to cataracts.

To avoiding UV rays:

1.    The best to combat UV rays is awareness of their danger and with bodily protection;
2.    Always wear protective sunglasses and a hat to protect the eyes, as hat will also save hair from UV damage, as well as the skin on the face and neck;
3.    Other useful protection for the skin is long loose clothing and using the sunscreen.

Characteristic of sunscreen:

1.    There are many types of sunscreen, but they all have a number indicating how protective they are against harmful UV rays;
2.    Always use sunscreen even if you will be only in the sun for short time.

The Main Aim◄►Health For All ☼ Clean Environment!

Big luck