Assertion: lcd's light | /r/HasProperty | incident
Facets:
value: on the plain mirror
type: LOCATION
value: along the helical axis
type: OTHER
Source sentences:
text: For the case of Bragg reflection only the lowest-order reflection is allowed if the light is incident along the helical axis, whereas for oblique incidence higher-order reflections become permitted.
text: This light is incident on the plain mirror placed ahead of these film-coated mirrors.