Mar 9, 2016 · What is the difference between UVA, UVB and UVC? The three types of UV radiation are classified according to their wavelength. They differ in their biological activity and the extent to which …

Jul 24, 2025 · Ultraviolet (UV) radiation covers the wavelength range of 100–400 nm, which is a higher frequency and lower wavelength than visible light. UV radiation comes naturally from the sun, but it …

Dans notre environnement, le soleil est de loin la source de rayonnement ultraviolet la plus importante. Le soleil émet de la lumière, de la chaleur et des rayons ultraviolets (UV). Exactement comme la …

Jul 16, 2024 · UV radiation can cause short- and long-term health effects on the skin. In addition to the well-known short-term effects such as sunburn or allergic reactions, long-term effects like skin …

Jun 21, 2022 · Key facts Skin cancers are caused primarily by exposure to ultraviolet radiation (UVR), either from the sun or from artificial sources such as sunbeds. Globally in 2020, over 1.5 million …

Visión de conjunto El índice UV solar mundial (IUV) descrito en el presente documento es una medida sencilla de la intensidad de la radiación UV en la superficie terrestre y un indicador de su capacidad …

Dec 17, 2021 · BackgroundThe ability of ultraviolet radiation to disinfect water, surfaces and air has been known for over a hundred years. In the last few decades, the primary application across the …

Highlighting some of the misinformation circulating on COVID-19

Jun 20, 2022 · What is the UV index? a measure of the level of UV radiation; the values of the index range from zero upward - the higher the UVI, the greater the potential for damage to the skin and …

Oct 16, 2017 · The incidence of both non-melanoma and melanoma skin cancers has been increasing over the past decades. Currently, between 2 and 3 million non-melanoma skin cancers and 132,000 …