infrared
紅外線
In·fra·red, In·fra-red a.
1. Physics Lying outside the visible spectrum at its red end; -- said of rays having a longer wavelength (and thus less refrangible) than the extreme red rays, specifically those electromagnetic waves having a wavelength of between 700 nanometers and 1 millimeter.
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infrared
adj : having or employing wavelengths longer than light but
shorter than radio waves; lying outside the visible
spectrum at its red end; "infrared radiation";
"infrared photography"
n 1: the infrared part of the electromagnetic spectrum;
electromagnetic wave frequencies below the visible
range; "they could sense radiation in the infrared"
[syn: infrared frequency]
2: electromagnetic radiation with wavelengths longer than
visible light but shorter than radio waves [syn: infrared
light, infrared radiation, infrared emission]