Assertion: confocal microscope | /r/CapableOf | focus smaller beam of light
Facets:
value: at one narrow depth level
type: LOCATION
value: at a time
type: TEMPORAL
Source sentences:
text: Light travels through the sample under a conventional microscope as far into the specimen as it can penetrate, while a confocal microscope only focuses a smaller beam of light at one narrow depth level at a time.