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  Incidents of skin cancer|Skin problems
Skin problems
Incidents of skin cancer and the sun emits three forms of radiation: infrared, visible, and ultraviolet. Infrared and visible light are valuable because they provide warmth and the ability to see. But ultraviolet light can be harmful. It consists of three basic wavelengths: Ultraviolet A (longest), Ultraviolet B (mid-length), and Ultraviolet C (shortest). Each penetrates the atmosphere and affects our health in different ways UVB Rays: Since UVB rays are absorbed into the epidermis, they can cause skin cancer by altering the normally well-organized behavior of the cells. It is as if the cells of the skin are panicking in response to the continuous abuse of the UVB rays in the Incidents of skin cancer. The incidence of skin cancer doubles every 300 miles (485 km) we move closer to the equator. The absorption of UVB rays in the epidermis also causes pigment cells to become less efficient and uniform in producing melanin. The demand for overtime production due to UVB rays results in inefficiencies and causes blotchy discoloration of the skin. Here the UVB rays wreak havoc. By breaking down the collagen and elastin building blocks, they cause wrinkles; by clumping up the protein, UVB causes the ski to take on a thick leathery texture; and, by weakening the walls of small blood vessels, web-like lines known as spider veins form on the surface of the skin. These characteristics often do not appear for months, years, or even decades after the sun exposure. Incidents of skin cancer and the sun is not the only source of UVB light rays in our environment. The tungsten-halogen lamp, which is in common use in our offices and homes, transmits UVB rays through the protective quartz lining on the inside of the glass bulbs. The purpose of the quartz lining is to prevent the glass from melting because the energy emitted is very hot. However, the amount of UVB emitted from a 5 watt halogen lamp at a 25 centimeter distance can be equal to that emitted by the summer sun. To prevent this hazardous effect a UVB protected glass should be installed in front of the lamp in the Causes of skin cancer. UVA Rays: Causes of skin cancer and recent research into the impact of UVA rays has shown this wavelength may be as harmful to skin as are the UVB rays. This is important to know since many suntan parlors use UVA wavelength bulbs. UVA is absorbed into the epidermis and passes through to the dermis. It does this much more efficiently and in much greater amounts than UVB rays. This realization has changed the ‘safe sun’ rules.
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