Assertion: polonium | /r/ObjectUse | used as a source of neutrons
Facets:
value: in brushes
type: LOCATION
value: in laboratories
type: LOCATION
Source sentences:
text: In laboratories, polonium is used as a source of neutrons for experiments.
text: It is also utilized as a source of neutrons (when mixed with beryllium), as an antistatic device in industrial equipment, and in brushes that remove dust from photographic film.