Assertion: fiber optic cable's core | /r/LocatedNear | a layer of glass
Facets:
Source sentences:
text: The core is surrounded by a layer of glass called cladding that reflects light inward to avoid loss of signal and allow the light to pass through bends in the cable.
text: The core is surrounded by a layer of glass called cladding that reflects light inward to avoid loss of signal and allow the light to pass through bends in the cable.