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The Dangers of UVA and UVB Rays
By: Arman Hansen
Skin care has revolutionized ever since new discoveries that involve the environment's effect on skin. In your studies you will encounter "UVA" and "UVB". You will also encounter products that say they give you UV protection and the like. But what are UV and UVB anyway?

Awareness is important if you really want to have beautiful, healthy skin. So, here are the things that you should know about UVA and UVB for you to be aware of their differences and effects to your skin.

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The Terms

Basically, the term 'UV' is short for "Ultraviolet". Consequently, "UVB" means "Ultraviolet B", which is one type of UV. There are various kinds of Ultra Violet rays and each kind may or may not have a certain effect on your skin.

The Discovery

UV radiation discovery happened while observing silver salts which darkened when they were exposed to sunlight. It was in 1801 that Johann Wilhelm Ritter, a German physicist, observed that there were invisible rays situated somewhere beyond the violet area of the visible light spectrum. He discovered that they were actually very effective in darkening paper that was soaked in silver chloride.
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He used the term "de-oxidizing rays" to emphasize the light ray's chemical reactivity. He did this to make a distinction from "heat rays", which are found on the spectrum's other end. Shortly, "chemical rays", which was a much simpler term was adopted. This became popular in the 19th century then were dropped and now "infrared radiation" and "ultraviolet radiation" are the commonly used terms.

UV Rays

Skin wise, UV rays are considered to have very serious effects on skin. It has several types, but the ones that really affect skin are UVA an UVB. Both of these have been connected to the immune system's weakening along with skin cancer. UV rays also cause the skin's premature aging, discoloration and eye cataracts.

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