Assertion: beam's divergence | /r/HasProperty | calculated
Facets:
Source sentences:
text: The divergence of a beam can be calculated if one knows the beam diameter at two separate points far from any focus (D i , D f ), and the distance (l) between these points.
text: The divergence of a laser beam can be calculated if the beam diameter d 1 and d 2 at two separate distances are known.