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The meaning of ULTRAVIOLET is situated beyond the visible spectrum at its violet end —used of radiation having a wavelength shorter than wavelengths of visible light and longer than those of X-rays. How to use ultraviolet in a sentence.
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.
Aug 6, 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.
describes light at the purple end of the spectrum (= set of colors into which light is separated), which cannot be seen by human beings. (Definition of ultraviolet from the Cambridge Academic Content Dictionary © Cambridge University Press) Examples of ultraviolet.
Relating to electromagnetic radiation having frequencies higher than those of visible light but lower than those of x-rays, approximately 10 15 –10 16 hertz. Some animals, such as bees, are capable of seeing ultraviolet radiation invisible to the human eye. See more at electromagnetic spectrum.
ULTRAVIOLET meaning: 1. Ultraviolet light has a wavelength that is after the violet (= light purple) end of the range of…. Learn more.
Aug 24, 2023 · UV radiation is a form of electromagnetic energy emitted primarily by the sun and specific artificial sources. It falls just beyond the violet end of the visible light spectrum, making it...
Use the adjective ultraviolet to describe light with a wavelength that's less than visible light, but longer than x-rays. You can't see ultraviolet light.
(abbreviation UV) [usually before noun] (physics) of or using electromagnetic waves that are just shorter than those of violet light in the spectrum and that cannot be seen. ultraviolet rays (= that cause the skin to go darker) an ultraviolet lamp. compare infrared Topics Physics and chemistry c2. Oxford Collocations Dictionary.
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.
