Assertion: galvanometer | /r/HasProperty | reported by johann schweigger
Facets:
value: at the university of halle
type: LOCATION
value: on 16 september
type: TEMPORAL
Source sentences:
text: The earliest galvanometer was reported by Johann Schweigger at the University of Halle on 16 September 1820.
text: The earliest galvanometer was reported by Johann Schweigger at the University of Halle on 16 September 1820.
text: The earliest galvanometer was reported by Johann Schweigger at the University of Halle on 16 September 1820.