electromagnetic radiation with wavelengths longer than visible light but shorter than radio waves
having or employing wavelengths longer than light but shorter than radio waves; lying outside the visible spectrum at its red end
the infrared region of the electromagnetic spectrum; electromagnetic wave frequencies below the visible range
a substance that is emitted or released
electromagnetic radiation with wavelengths longer than visible light but shorter than radio waves
any of several bodily processes by which substances go out of the body
the release of electrons from parent atoms
