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  1. Ultraviolet - Wikipedia

    • Ultraviolet radiation, also known as simply UV, 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. It is also produced by electric arcs, Cherenkov radiation, and specialized lights… See more

    Visibility

    Ultraviolet rays are usually invisible to most humans. The lens of the human eye blocks most radiation in the wavelength range of 300–400 nm; shorter wavelengths are blocked by the cornea. Humans also lack color receptor adaptations … See more

    History and discovery

    "Ultraviolet" means "beyond violet" (from Latin ultra, "beyond"), violet being the color of the highest frequencies of visible light. Ultraviolet has a higher frequency (thus a shorter wavelength) than violet light.
    UV radiatio… See more

     
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  2. Ultraviolet - Simple English Wikipedia, the free encyclopedia

     
  3. Radiation - Wikipedia

    Ultraviolet radiation. Ultraviolet, of wavelengths from 10 nm to 200 nm, ionizes air molecules, causing it to be strongly absorbed by air and by ozone (O 3) in particular. Ionizing UV therefore does not penetrate Earth's atmosphere to a …

  4. Ultraviolet index - Wikipedia

    The ultraviolet index, or UV index, is an international standard measurement of the strength of the sunburn-producing ultraviolet (UV) radiation at a particular place and time. It is primarily used in daily and hourly forecasts aimed at the …

  5. Ultraviolet radiation | Definition, Examples, Effects, …

    Dec 19, 2024 · Ultraviolet radiation,that portion of the electromagnetic spectrum extending from the violet, or short-wavelength, end of the visible light range to the X-ray region. Its wavelengths are between 400 and 10 nanometers. Learn …

  6. Ultraviolet Light or UV Radiation - Science Notes and …

    Apr 1, 2023 · Ultraviolet light or UV is electromagnetic radiation in the wavelength range of 10 to 400 nanometers (nm), which is between x-rays and visible light. Because it is largely invisible to humans, another name for UV is black light.

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  8. What Is Ultraviolet Light (Ultraviolet Radiation)? Pros, …

    Mar 15, 2024 · Ultraviolet (UV) light is electromagnetic radiation. It has a wavelength ranging from 10 nanometers to 400 nanometers (nm). The wavelength of light refers to the distance between two wave peaks. The …

  9. Ultraviolet radiation - Energy Education

    Ultraviolet radiation (UV) is a type of radiant energy, much like the light we see, but with a smaller wavelength and higher energy. It is defined as the light in the spectrum of wavelengths between 40-400 nanometers. This means that it lies …

  10. ultraviolet radiation - Wikidata

  11. Extreme ultraviolet - Wikipedia

  12. Radiation: Ultraviolet (UV) radiation - World Health Organization …

  13. Facts About Ultraviolet Radiation | Radiation and Your Health | CDC

  14. Ultraviolet radiation - World Health Organization (WHO)

  15. Ultraviolet radiation - World Health Organization (WHO)

  16. Ultraviolet Radiation - an overview | ScienceDirect Topics

  17. Ultraviolet - Wikiwand

  18. Ultraviolet - ScienceDaily

  19. Category:Ultraviolet radiation - Wikipedia

  20. Ultraviolet (disambiguation) - Wikipedia

  21. What Is Ultraviolet Light? - Live Science