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1. www.who.int › news-room › questions-and-answersRadiation: The ultraviolet (UV) index - World Health Organization...

   www.who.int › news-room › questions-and-answers

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   The UVI is 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 eye, and the less time it takes for harm to occur. The UVI is an important vehicle to alert people about the need to use sun protection. A marked increase in the incidence ...

2. www.who.int › item › radiation-the-known-health-effects-of-ultraviolet-radiationRadiation: The known health effects of ultraviolet radiation

   www.who.int › item › radiation-the-known-health-effects-of-ultraviolet-radiation

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   16 de oct. de 2017 · The sun's rays provide warmth and light that enhance your general feeling of well-being and stimulate blood circulation. Some UV radiation is essential to the body as it stimulates the production of vitamin D. Vitamin D has an important function in increasing calcium and phosphorus absorption from food and plays a crucial role in skeletal development, immune function and blood cell formation.

3. fr.wikipedia.org › wiki › UltravioletUltraviolet — Wikipédia

   fr.wikipedia.org › wiki › Ultraviolet

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   Pour les articles homonymes, voir Ultraviolet (homonymie) . Ultraviolets des lampes fluorescentes, une source commune artificielle, des rayons UVA. Le rayonnement de ces lampes déborde dans le haut du spectre de la lumière visible, ce qui donne la couleur violette qu’on observe.

4. ultraviolette.com.auShop ULTRA VIOLETTE Australia - Best SPF Face & Body

   ultraviolette.com.au

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   Future proof your face (and bod) with Ultra Violette sunscreen. Or SKINSCREEN (™) as Vi likes to call it.It's SPF but not as you know it. Ultra Violette is the leading collection of new gen sunscreen designed to protect your skin from the harmful effects of sun exposure and work with the rest of your skin care and makeup with ease.

5. www.who.int › es › news-roomRadiación ultravioleta - World Health Organization (WHO)

   www.who.int › es › news-room

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   Efectos en la salud. Las cantidades pequeñas de radiación ultravioleta son necesarias para producir vitamina D, pero la exposición excesiva tiene consecuencias negativas para la salud, ya que puede causar cáncer. Efectos en la piel. Los efectos agudos de la radiación ultravioleta pueden ser: daños en el ADN, quemaduras solares, reacciones ...

6. solar-center.stanford.edu › about › uvlightUV Light - Stanford Solar Center

   solar-center.stanford.edu › about › uvlight

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   UV (Ultraviolet) Light refers to the region of the electromagnetic spectrum between visible light and X-rays, with a wavelength falling between 400 and 10 nanometers. This electromagnetic radiation is not visible to the human eye, because it has a shorter wavelength and higher frequency than the light our brain perceives as images.

7. ja.wikipedia.org › wiki › 紫外線紫外線 - Wikipedia

   ja.wikipedia.org › wiki › 紫外線

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   紫外線（しがいせん、英: ultraviolet ）は、波長が10 - 400 nm 、即ち可視光線より短く軟X線より長い不可視光線の電磁波である。可視光線の紫色の外側という意味で紫外線という。1960年代（昭和35年）以前の呼び名は菫外線（きんがいせん）とも 。