Assertion: newtonian telescope's mirror | /r/HasProperty | coated with enhanced aluminum
Facets:
value: to at least 92% reflectivity
type: OTHER
Source sentences:
text: The mirror is coated with enhanced aluminum to at least 92% reflectivity and coated with a protective layer of SiO 2 (quartz) for durability.
text: The mirror is coated with enhanced aluminum to at least 92% reflectivity and coated with a protective layer of SiO 2 (quartz) for durability.
text: The mirror is coated with enhanced aluminum to at least 92% reflectivity and coated with a protective layer of SiO 2 (quartz) for durability.
text: The mirror is coated with enhanced aluminum to at least 92% reflectivity and coated with a protective layer of SiO 2 (quartz) for durability.