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Radiation: Ultraviolet (UV) radiation 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 they can penetrate the skin The shorter the wavelength, the more harmful the UV radiation
Ultraviolet radiation - World Health Organization (WHO) 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 can also be created by artificial sources used in industry, commerce and recreation
Radiation: The known health effects of ultraviolet radiation 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 cancer represent a chronic health risk Skin cancer risk is strongly correlated with the duration and frequency of sun exposure over one’s lifetime Cumulative UV dose is related to the development of
Radiation: The ultraviolet (UV) index 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 eye, and the less time it takes for harm to occur; an important vehicle to alert people about the need to use sun protection
Webinar: Disinfection using Ultraviolet Radiation 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 world has been water disinfection, but it has also matured as a means of disinfection in healthcare and other environments The COVID-19 pandemic has highlighted the potential for UV radiation to manage the
Ultraviolet radiation - World Health Organization (WHO) 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 cases of skin cancers were diagnosed and over 120 000 skin cancer-associated deaths were reported Worldwide, it is estimated that 15 million people are blind due to cataracts; of these, some 10% may be due to
Radiation: Ultraviolet (UV) radiation and skin cancer 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 melanoma skin cancers occur globally each year One in every three cancers diagnosed is a skin cancer and, according to Skin Cancer Foundation Statistics, one in every five Americans will develop skin cancer in their
Rayonnement ultraviolet - World Health Organization (WHO) 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 lumière visible est composée de différentes couleurs visibles dans un arc-en-ciel, le spectre du rayonnement UV est divisé en trois régions : les UVA, les UVB et les UVC Lorsque les
Global solar UV index - a practical guide The Global Solar UV Index (UVI) described in this document is a simple measure of the UV radiation level at the Earth’s surface and an indicator of the potential for skin damage It serves as an important vehicle to raise public awareness and to alert people about the need to adopt protective measures when exposed to UV radiation
Mythbusters - World Health Organization (WHO) FACT: Hand sanitizers can be used often An alcohol-based sanitizer does not create antibiotic resistance Unlike other antiseptics and antibiotics, pathogens (harmful germs) do not seem to develop resistance to alcohol-based sanitizers