Assertion: reflecting telescope's mirror | /r/ObjectUse | used in the past
Facets:
value: as a way
type: MANNER
Source sentences:
text: A most likely apocryphal tradition has it that parabolic mirrors have been used in the past as a way of gathering sunlight to spontaneously ignite enemy ships, or to heat up the armor of the enemy to a point where they were forced to remove it.