Assertion: geissler tube | /r/HasProperty | mass-produced
Facets:
value: as entertainment devices
type: MANNER
value: from the 1880s
type: TEMPORAL
value: as novelty
type: PURPOSE
Source sentences:
text: Geissler tubes were mass-produced from the 1880s as novelty and entertainment devices, with various spherical chambers and decorative serpentine paths formed into the glass tube.