Assertion: infrared light's wavelength | /r/HasProperty | invisible
Facets:
value: to the eye
type: TRANSITIVE-OBJECT
value: essentially
type: DEGREE
Source sentences:
text: For scenes illuminated with broadband white light sources, the wavelengths above 700nM have far less than 1% contribution to visible red colors, and are essentially invisible.
text: The shortest wavelength of the infrared spectrum borders visible light/ultraviolet and the longest wavelength borders microwave.
text: Infrared heating works by providing electromagnetic radiation with wavelengths between 780 nm and 1 mm that is invisible to the eye.
text: Just as sunglasses absorb the harsher parts of sunlight, many materials absorb the longer infrared (IR) wavelengths that are invisible to the human eye.