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  1. Episode Guide


      • Ola witnesses a body plunging from an overpass; police rule it a suicide.
    • 2. Hashtag alicja
      2. Hashtag alicja Aug 17, 2018
      • A "smart house" named Alicja and a hacker named Piast help Ola with a mystery.
    • 3. Hashtag explosion
      3. Hashtag explosion Aug 17, 2018
      • Henryk's friend's son is blamed for a politically motivated blast against an anti-immigrant leader.
  2. en.wikipedia.org › wiki › UltravioletUltraviolet - Wikipedia

    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.

  3. Apr 3, 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. 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 ...

  4. The UV region covers the wavelength range 100-400 nm and is divided into three bands: UVA (315-400 nm) UVB (280-315 nm) UVC (100-280 nm). Short-wavelength UVC is the most damaging type of UV radiation. However, it is completely filtered by the atmosphere and does not reach the earth's surface.

  5. Aug 10, 2016 · The Sun is a source of the full spectrum of ultraviolet radiation, which is commonly subdivided into UV-A, UV-B, and UV-C. These are the classifications most often used in Earth sciences. UV-C rays are the most harmful and are almost completely absorbed by our atmosphere.

  6. Jun 21, 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. Worldwide, it is estimated that 15 million people are blind ...

  7. Aug 24, 2023 · Summary. UV radiation comes primarily from the sun and is made up of UVA, UVB, and UVC rays. UVC rays do not reach Earth, but both UVA and UVB rays pose health risks. While UVB rays are the ...

  8. Sep 15, 2017 · Ultraviolet light is a type of electromagnetic radiation that makes black-light posters glow, and is responsible for summer tans — and sunburns. However, too much exposure to UV...

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