UVA & UVB

Understanding UVA and UVB



For a six billion-year-old star, the sun is certainly in the news a lot lately, mainly because it is still a source of uncertainty and confusion to many of us.The center of this confusion is the sun's ultraviolet A (long-wave) and ultraviolet B (shortwave) rays.Read More

Featured Content

  • Shining Light on Ultraviolet Radiation Shining Light on Ultraviolet Radiation

    Ultraviolet radiation is composed of three wavelengths: UVA, UVB and UVC.  While UVC isn't a concern for skin cancer, UVA and UVB play different roles when it comes to tanning, burning, and …

  • UVA Radiation: A Danger Outdoors and Indoors UVA Radiation: A Danger Outdoors and Indoors
    While it's understood that taking sun safety precautions during the summer months is a must, many people don't realize they need to protect their skin year-round - even when indoors. The temperature …
  • Ozone and UV: Where Are We Now? Ozone and UV: Where Are We Now?
    The stratospheric ozone layer absorbs most of the harmful ultraviolet B (UVB) radiation (shortwave UV rays measuring 280-315 nanometers, or nm) emitted by the sun. In small amounts, UVB radiation is …
  • Landmark Research Links Melanoma to UV Radiation Landmark Research Links Melanoma to UV Radiation

    Mark Teich, Executive Editor

    In December 2009, a remarkable new study made perhaps the strongest case ever that some melanomas are caused by exposure to ultraviolet (UV) radiation.

    Scientists at …