Assertion: microscope's lense | /r/HasProperty | one
Facets:
Source sentences:
text: The objective lenses are the ones?
text: It is also suspected that Leeuwenhoek used blown-glass lenses and that these lenses were the ones responsible for the incredible magnifications of his simple microscopes.
text: The upper lenses of the compound microscope, the ones closer to the viewer's eye, are the ocular lenses or the eyepiece.