An invisible part of light, with longer wavelengths that are felt as heat radiation.
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"
the infrared part of the electromagnetic spectrum; electromagnetic wave frequencies below the visible range; "they could sense radiation in the infrared"
electromagnetic radiation with wavelengths longer than visible light but shorter than radio waves
the infrared region of the electromagnetic spectrum; electromagnetic wave frequencies below the visible range
having or employing wavelengths longer than light but shorter than radio waves; lying outside the visible spectrum at its red end
