(from the article `ultraviolet radiation`) ...in biological experimentation. Based on the interaction of wavelengths of ultraviolet radiation with biological materials, three divisions have ...
Found on
http://www.britannica.com/eb/a-z/u/20
Invisible rays that are part of the energy that comes from the sun. UVA radiation also comes from sun lamps and tanning beds. UVA radiation may cause premature aging of the skin and skin cancer. It may also cause problems with the eyes and the immune system. Skin specialists recommend that people use sunscreens that protect the skin from ultraviole...
Found on
http://www.cancer.gov/dictionary?expand=U
Sunlight has a profound effect on the skin causing premature skin aging, skin cancer, and a host of skin changes. Exposure to ultraviolet light, UVA or UVB, from sunlight accounts for 90% of the symptoms of premature skin aging. Many skin changes that were commonly believed to be due to aging, such as easy bruising, are actually a result of prolong...
Found on
https://www.encyclo.co.uk/local/21223
The weakest type of UV radiation from the sun. These rays are able to penetrate deep into the skin causing premature aging, wrinkles and some skin cancers.
Found on
https://www.encyclo.co.uk/local/21608
No exact match found.
