Assertion: acrylic | /r/HasAspect | refractive index
Facets:
value: along its length of about 1.50
type: OTHER
value: to 1.53
type: OTHER
Source sentences:
text: Acrylic fiber has a refractive index along its length of about 1.50 to 1.53 and perpendicular to its length of about 1.50 to 1.53.