(280 to 320 namometer wavelength) readily affected by ozone levels. Decreases in ozone levels lead to increase UVB radiation reaching the earth. Increased UVB leads to a variety of skin problems including sunburn, skin cancer and premature aging.
UVB is that part of the UV spectrum between 280 and 315 nanometers. Only a fraction of the UVB originating from the sun passes through the ozone layer to reach the earth. However, even in small amounts UVB is absorbed by chromosomes and cell proteins and is a major threat to skin. UVB accounts for most sunburn – leading to the mnemonic “B for burning”. UVB also contributes to other forms of skin damage including premature aging and skin cancer.
Not visible to the naked eye, gives humans sun tans, allows for synthesis of vitamin D3 which allows reptiles to process calcium to prevent bone disease
Ultraviolet Radiation Band "B". Often given as 280 to 320 nm (nanometers).
a kind of ultraviolet light from the sun (and sun lamps) that has several harmfull effects, particularly effective at damaging DNA. It is a cause of melanoma and other types of skin cancer. It has also been linked to damage to some materials, crops, and marine organisms. The ozone layer protects the Earth against most UVB coming from the sun. It is always important to protect oneself against UVB, even in the absence of ozone depletion, by wearing hats, sunglasses, and sunscreen. However, these precautions will become more important as ozone depletion worsens. NASA provides more information on their web site.
The sun’s rays which represent the burning spectrum.
Most of UVB reaches the surface of the earth, making this form of radiation damaging to your skin.
The ultraviolet light frequency that causes burning of the skin. All tanning bed lamps produce some ratio of UVA and UVB rays.
Ultraviolet radiation, usually defined to be in the range from 280 to 320 nm.
damaging rays from the sun can cause skin conditions that lead to sunburn and skin cancer
The non-visible range. Helps synthesis of vitamin D3 and processes calcium.
Ultraviolet radiation B (wavelengths between 290-320 nm)
