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Ultraviolet (UV) light is electromagnetic radiation of wavelengths of 10–400 nanometers, shorter than that of visible light, but longer than X-rays. UV radiation is present in sunlight, and constitutes about 10% of the total electromagnetic radiation output from the Sun.
23 wrz 2024 · Ultraviolet (UV) radiation is undetectable by the human eye, although, when it falls on certain materials, it may cause them to fluoresce—i.e., emit electromagnetic radiation of lower energy, such as visible light. Many insects, however, are able to see ultraviolet radiation.
21 cze 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 cases of skin cancers were diagnosed and over 120 000 skin cancer-associated deaths were reported.
29 lip 2024 · Learn about the sources, effects and prevention of UV radiation, a type of electromagnetic energy that covers the wavelength range of 100–400 nm. Find out how UV radiation can cause skin cancers, cataracts and immune system damage, and how to protect yourself from excessive exposure.
Learn about the different types of UV radiation, how they affect the skin and eyes, and what factors influence your exposure. Find out how ozone depletion, season, time of day, altitude, clouds, and reflection affect UV levels.
10 sie 2016 · NASA's SDO spacecraft captured the image below in multiple wavelengths of extreme ultraviolet (EUV) radiation. The false-color composite reveals different gas temperatures. Reds are relatively cool (about 60,000 Celsius) while blues and greens are hotter (greater than one million Celsius).
Learn how UV radiation from the sun influences living organisms, from DNA damage to Vitamin D production, and how ozone depletion affects the balance. Explore the effects of UV radiation on human health, aquatic ecosystems, agricultural plants and more.
