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ULTRAVIOLET RADIATION
| Pronunciation (US): |  | (GB): | |
I. (noun)
Sense 1
Meaning:
Radiation lying in the ultraviolet range; wave lengths shorter than light but longer than X rays
Synonyms:
ultraviolet; ultraviolet illumination; ultraviolet light; ultraviolet radiation; UV
Classified under:
Nouns denoting natural phenomena
Hypernyms ("ultraviolet radiation" is a kind of...):
actinic radiation; actinic ray (electromagnetic radiation that can produce photochemical reactions)
Hyponyms (each of the following is a kind of "ultraviolet radiation"):
sun-ray; sunray (a ray of artificial ultraviolet light from a sunray lamp)
Context examples:
Stratospheric ozone protects life on the planet by absorbing potentially harmful ultraviolet radiation that can cause skin cancer and cataracts, suppress immune systems and damage plant life.
(First Direct Proof of Ozone Hole Recovery Due to Chemicals Ban, NASA)
Skin cancer, one of the most common types of cancer throughout the world, is primarily caused by overexposure to ultraviolet radiation (UVR).
(New wristband provides personalised and real-time tracking of UV exposure, University of Granada)
Its close proximity to its parent star exposes it to ultraviolet radiation, and according to the calculations, the planet loses planetary material anywhere between ten billion to ten trillion grams each second.
(Astronomers reveal discovery of the hottest gas giant exoplanet known yet, Wikinews)
The team also exposed the laboratory brew to a high dose of ultraviolet radiation - similar to what a hot Jupiter would experience orbiting so close to its parent star.
(Cooking up Alien Atmospheres on Earth, NASA)
These findings may help researchers determine if humans with certain DNA sequences are more or less susceptible to DNA damage caused by ultraviolet radiation (UVR) or respond to cellular stress differently.
(New regions of the human genome linked to skin color variation in some African populations, National Institutes of Health)
Its wavelengths are generally greater than those of far ultraviolet radiation and range through the longest radio waves.
(Nonionizing Radiation, NCI Thesaurus)
As a result, the planet’s early ocean evaporated, water-vapor molecules were broken apart by ultraviolet radiation, and hydrogen escaped to space.
(NASA Climate Modeling Suggests Venus May Have Been Habitable, NASA)
This material was blown out by strong stellar winds and energised by ultraviolet radiation from the hot stellar core left behind, creating a circumstellar nebula of dust and brightly-coloured hot gas.
(The Strange Structures of the Saturn Nebula, ESO)
The team determined that when PAHs in the nebula NGC 7023, also known as the Iris Nebula, are hit by ultraviolet radiation from the nebula’s central star, they evolve into larger, more complex molecules.
(“Kitchen Smoke” Molecules in Nebula Offer Clues to the Building Blocks of Life, NASA)
Last year, NASA put out a statement expressing doubt that the planet could have an atmosphere in the sense that most of us understand it: Considering the host star's age and the planet's proximity to its host star, the scientists expect that Proxima B is subjected to torrents of X-ray and extreme ultraviolet radiation from superflares occurring roughly every two hours.
(Simulations show planet orbiting Proxima Centauri could have liquid water, Wikinews)
