Assertion: fiber optic cable's glass | /r/ObjectUse | used in the core
Facets:
Source sentences:
text: The glass used in the core is extremely pure silicon dioxide (SiO2), a material so clear that you could look through 5 miles of it as though you were looking through a household window.
text: The glass used in the core is extremely pure silicon dioxide (SiO2), a material so clear that you could look through 5 miles of it as though you were looking through a household window.