Assertion: electron microscope | /r/CapableOf | use electron beams
Facets:
value: to illuminate the specimen
type: PURPOSE
Source sentences:
text: Electron microscope uses electron beams (wavelength ~0.01 nm) to illuminate the specimen.
text: Electron microscopes use elec-tron beams instead of light rays, and magnets instead of lenses to observe submicro-scopic particles.