Assertion: antenna | /r/HasProperty | built in his pioneering experiments
Facets:
value: by german physicist heinrich hertz
type: OTHER
Source sentences:
text: The first antennas were built in 1888 by German physicist Heinrich Hertz in his pioneering experiments to prove the existence of waves predicted by the electromagnetic theory of James Clerk Maxwell.
text: The first antennas were built in 1888 by German physicist Heinrich Hertz in his pioneering experiments to prove the existence of waves predicted by the electromagnetic theory of James Clerk Maxwell.