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You should be using a hair sunscreen to protect your scalp and hair from damage due to UV rays. We tested and reviewed 9 products, and consulted experts, here.
Inuit snow goggles function by reducing exposure to sunlight, not by reducing its intensity. Since the 13th century and until the spread of contemporary UV-shielding spectacles against snowblindness, Inuit made and wore snow goggles of flattened walrus or caribou ivory with narrow slits to look through to block almost all of the harmful reflected rays of the sun.
Solar viewers manufactured prior to 2015 may have a three-year limit before they can no longer effectively filter out UV radiation and should no longer be used. Starting in 2015, products manufactured to meet the standards of ISO 12312-2 can be used indefinitely as long as they have not been damaged by scratches or tears.
In photography, the term "UV filter" can also be misused as a filter that passes UV light while blocking other wavelengths in the light spectrum, in the same way, the term "IR filter" is used for filtering the entire spectrum. The correct name for such filters are "UV pass filter" and "IR pass filter" respectively, and they are only used in ...
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You probably know someone who owns and swears by their blue light glasses. Nowadays people spend more time than ever in front of a digital device, whether it’s their phones, tablets, or a TV ...