(a.) Lying outside the visible spectrum at its red end; -- said of rays less refrangible than the extreme red rays.
INFRA-RED
Meaning of INFRA-RED in English
Webster's English dictionary. Английский словарь Webster. 2012
(a.) Lying outside the visible spectrum at its red end; -- said of rays less refrangible than the extreme red rays.
Webster's English dictionary. Английский словарь Webster. 2012