Assertion: oscilloscope | /r/HasProperty | invented by french physicist
Facets:
value: in 1893
type: TEMPORAL
Source sentences:
text: The oscilloscope was invented by a French physicist André Blondel in 1893.
text: Oscilloscope was invented by a French physicist André Blondel, who built and presented the first electromechanical oscilloscope back in 1893.