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The ultraviolet index, or UV index, is an international standard measurement of the strength of the sunburn -producing ultraviolet (UV) radiation at a particular place and time. It is primarily used in daily and hourly forecasts aimed at the general public. The UV index is designed as an open-ended linear scale, directly proportional to the ...
The European standard EN 1836:2005 has four transmittance ratings: "0" for insufficient UV protection, "2" for sufficient UHV protection, "6" for good UHV protection and "7" for "full" UHVV protection, meaning that no more than 5% of the 380 nm rays are transmitted. Products which fulfill the standard receive a CE mark.
A relatively new rating designation for sun protective textiles and clothing is UPF (ultraviolet protection factor), which represents the ratio of sunburn-causing UV measured without and with the protection of the fabric. For example, a fabric rated UPF 30 means that, if 30 units of UV fall on the fabric, only 1 unit will pass through to the skin.
These polarized sunglasses are available in a darker and lighter lens that both offer 100% UV protection, so snag one pair for sunnier days and another pair for when it’s cloudier out.
Our editors have tested and found the 18 best aviator sunglasses that not only make a style statement but also provide the ultimate eye protection in the sun. The Best Aviator Sunglasses Any Guy ...
3. Fossil Julian Rectangle Sunglasses. Offering 100 percent UV protection, Fossil’s Julian frames are a good pair of versatile sunglasses if you don’t want to break the bank. At less than $100 ...
Ballistic sunglasses or prescription eyeglasses must meet the same requirements. In brief, the U.S. military standard requires that ballistic eyewear must be able to withstand up to a 3.8 mm (.15 caliber) projectile at 195 m/s (640 ft/s)) for spectacles and 5.6 mm (.22 caliber) projectile at 168–171 m/s (550–560 ft/s) for goggles.
Check out the best sunglasses of the year, from everyday budget specs to bold designer frames. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 ...
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