Assertion: infrared light's wavelength | /r/HasProperty | emitted
Facets:
Source sentences:
text: Effective near infrared light therapy can come from a low level laser, high power LED, and array of low power LEDs, incandescent, fluorescent or other light source, as long as the proper wavelengths are emitted.
text: In this case, only the wavelengths of light which are emitted come out in the spectrum.