Assertion: telescope's lens | /r/AtLocation | place
Facets:
value: by its edge
type: CAUSE
Source sentences:
text: Since a lens can only be held in place by its edge, the center of a large lens will sag due to gravity, distorting the image it produces.
text: Since a lens can only be held in place by its edge, the center of a large lens will sag due to gravity, distorting the image it produces.
text: Since a lens can only be held in place by its edge, the center of a large lens sags due to gravity, distorting the images it produces.