Violet
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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.
May 31, 2024 · Learn about ultraviolet radiation, the portion of the electromagnetic spectrum between visible light and X-rays. Find out how it affects the human body, the environment, and various applications.
Mar 9, 2016 · Learn about the types, sources, effects and protection of UV radiation from the World Health Organization. Find out how ozone depletion, season, time, altitude, clouds and reflection affect your UV exposure and risk of skin cancer.
Nov 16, 2022 · Learn how ultraviolet (UV) radiation from the sun or tanning beds can cause skin cancer and other skin problems. Find out how to prevent and treat skin cancer and protect your skin from UV exposure.
Aug 24, 2023 · Learn about the different types of UV radiation, how they affect health, and what are the risks and benefits of exposure. Find out how to protect yourself from sunburn, skin aging, eye damage, and skin cancer.
Aug 10, 2016 · Learn about ultraviolet (UV) light, its sources, effects, and applications in astronomy and Earth science. See images and videos of UV waves from the Sun, stars, galaxies, and aurorae.
Ultraviolet (UV) light is part of a family of radiations called the electromagnetic (EM) spectrum. UV is just beyond the violet end of visible light and has smaller wavelengths and greater energy. As with all electromagnetic spectrum radiations, UV travels at the speed of light.
