Assertion: microscope's lens | /r/CapableOf | focus a beam of electrons
Facets:
value: to create a magnified image
type: PURPOSE
value: in lieu of an illuminator
type: CAUSE
value: onto a source
type: TRANSITIVE-OBJECT
Source sentences:
text: Together with Knolls, he developed the first electromagnetic lens, which focused a beam of electrons in lieu of an illuminator onto a source to create a magnified image.