Radiation: Ultraviolet (UV) radiation - World Health Organization …
2016年3月9日 · Everyone is exposed to UV radiation from the sun and an increasing number of people are exposed to artificial sources used in industry, commerce and recreation. The sun is …
Ultraviolet radiation - World Health Organization (WHO)
2022年6月21日 · UV exposure may also be involved in the development of age-related macular degeneration (AMD). Worldwide, it is estimated that 15 million people are blind due to …
Ultraviolet radiation - World Health Organization (WHO)
2024年7月29日 · 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 …
Radiation: The known health effects of ultraviolet radiation
2024年7月16日 · UV-A rays have longer wavelengths than UV-B rays, and thus penetrate deeper into the tissue layers of the eye and the skin. UV-A and UV-B rays also differ from each other …
Radiation: The ultraviolet (UV) index - World Health Organization …
2022年6月20日 · The UV Index is an important vehicle to raise public awareness of the risks of excessive exposure to UV radiation, and to alert people about the need to adopt protective …
Radiation: Effects of ultraviolet (UV) radiation on the skin, eyes and ...
2003年9月17日 · Bright light activates the constriction of the pupil and the squinting reflex to minimize the penetration of the sun’s rays into the eye. However, the effectiveness of these …
Radiation: Ultraviolet (UV) radiation and skin cancer
2017年10月16日 · As ozone levels are depleted, the atmosphere loses more and more of its protective filter function and more solar UV radiation reaches the Earth's surface. It is …
SunSmart Global UV App helps protect you from the dangers of …
2022年6月21日 · A new app for mobile phones that provides localized information on ultraviolet (UV) radiation levels has been launched by the World Health Organization (WHO), the World …
Mythbusters - World Health Organization (WHO)
FACT: Alcohol-based sanitizers are safe for everyone to use Alcohols in the sanitizers have not been shown to create any relevant health issues.
Global solar UV index : a practical guide - World Health …
2002年6月13日 · 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 …