= Heinrich Hertz
{c}
{title2=1857-1894}
{wiki}
= Heinrich Rudolf Hertz
{c}
{synonym}
<Heinrich Hertz> made <electromagnetic waves> experimentally accessible using electrical oscillators and a receiving loop with a small spark gap. The receiver's sparks supplied a local readout whose dependence on orientation, position and reflecting surfaces could be investigated. The resulting <interference> and <polarization> tests connected the apparatus with a wave description of the field. His collected papers also discuss limitations of early propagation measurements and specify the geometry and controls used to interpret the observations.<Electric Waves: Being Researches on the Propagation of Electric Action with Finite Velocity through Space by Heinrich Hertz>[1893 collected translation, Introduction pp. 9–12; papers VII–VIII, pp. 107–109 and 125–127]{ref}
Homepage: https://www.dhm.de/lemo/biografie/heinrich-hertz
\Image[https://upload.wikimedia.org/wikipedia/commons/5/54/Heinrich_Hertz.jpg]
{title=Portrait of <Heinrich Hertz>}
{description=Photograph identified on the https://commons.wikimedia.org/wiki/File:Heinrich_Hertz.jpg[portrait record].}
{width=240}
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