Assertion: refracting telescope | /r/CapableOf | use convex lens
Facets:
value: at the front of a tube
type: LOCATION
value: to gather incoming light
type: PURPOSE
Source sentences:
text: A refracting telescope uses a convex lens but has magnification limitations.
text: Refracting telescopes use convex lenses, at the front of a tube, to gather and focus incoming light.