Uv radiation penetration
When it comes to skin cancer , a major risk factor is prolonged exposure to ultraviolet UV radiation. Understanding the basics about UV radiation and how it damages your skin is an important first step in learning how to safeguard yourself against skin cancer. The good news is that the danger posed by UV radiation can be greatly reduced by you! Yes, you can still enjoy outdoor activities while limiting your skin cancer risk by taking simple, smart protective measures. UV radiation is part of the natural energy produced by the sun.
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Wavelength-dependent penetration depths of ultraviolet radiation in human skin
The three types of UV radiation are classified according to their wavelength. They differ in their biological activity and the extent to which they can penetrate the skin. The shorter the wavelength, the more harmful the UV radiation. However, shorter wavelength UV radiation is less able to penetrate the skin.
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Ultraviolet radiation UVR is defined as the portion of the electromagnetic spectrum between nanometers nm and nm. UVR is classified by wavelength into three regions:. Solar UV radiation is the single most significant source of UV radiation and can reach a person on the ground from three sources, directly from the sun, scattered from the open sky and reflected from the environment. This means that even if a person is shaded from the direct sun they can still receive substantial UV radiation exposure from the open sky.
Ultraviolet UV radiation is a form of electromagnetic radiation that comes from the sun and man-made sources like tanning beds and welding torches. Radiation is the emission sending out of energy from any source. UV rays are in the middle of this spectrum.
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