near 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.