Assertion: lens | /r/CapableOf | fall at its center
Facets:
value: from 2
type: TEMPORAL
value: equivalently,
type: MANNER
value: to 1
type: OTHER
Source sentences:
text: _{r}} of the material composing the lens falls from 2 at its center to 1 at its surface (or equivalently, the refractive index n {\displaystyle n} falls from 2 {\displaystyle {\sqrt {2}}} to 1), according to