Assertion: newtonian reflector | /r/CapableOf | use primary mirror
Facets:
value: with a parabolic shape
type: OTHER
Source sentences:
text: A Newtonian reflector is based on Newton’s original reflector design, but uses a primary mirror with a parabolic shape instead of a spherical shape.
text: A Newtonian Reflector uses a primary mirror and a secondary flat mirror.