near ultraviolet


Also found in: Dictionary, Thesaurus, Encyclopedia.
Related to near ultraviolet: Ultraviolet Rays, Vacuum ultraviolet

near ultraviolet

A term of uncertain utility that dignifies ultraviolet light with wavelengths between 290 and 390 nm—i.e., ultraviolet A (UV-A, wavelength = 320–390) and ultraviolet B (UV-B, wavelength = 290–320).

near ul·tra·vi·o·let

(nēr ŭl'tră-vī'ŏ-lĕt)
Range of light with wave lengths between 290-390 nm.
References in periodicals archive ?
When the newly developed near ultraviolet LED is combined with the mixture of phosphor of the three primary colors (red/green/blue), it achieves high levels of color rendering property, enabling its use in general lighting.
Cree has new product initiatives based on its experience in SiC- and GaN-based semiconductors, including near ultraviolet LEDs for solid-state lighting applications, blue laser diodes for optical storage applications, high frequency microwave devices for radar and other communications systems, and power devices for power conditioning and switching.
This project will combine its results with those from earlier surveys to cover wavelengths from the near ultraviolet (3000 angstroms) to the near infrared (2.
Describing their new "superconducting tunnel junction" (STJ) in the May 9 Nature, the researchers explain that it can detect the position, arrival time, and energy of individual photons whose wavelengths measure as little as 200 to 500 nanometers-from near ultraviolet to visible light.
To spot these "ultraviolet dropouts," the astronomers would have to compare images of galaxies taken in a variety of colors, ranging from the red to the near ultraviolet.
The Extreme Ultraviolet Explorer (EUVE), launched last June, detects this band of radiation, which can't penetrate Earth's atmosphere and is intermediate in energy between the near ultraviolet and X-rays (SN: 5/23/92, p.