Hertz·i·an a. Of or pert. to the German physicist Heinrich Hertz.
 Hertzian telegraphy, telegraphy by means of the Hertzian waves; wireless telegraphy.
 H. waves, electric waves; -- so called because Hertz was the first to investigate them systematically. His apparatus consisted essentially in an oscillator for producing the waves, and a resonator for detecting them. The waves were found to have the same velocity as light, and to undergo reflection, refraction, and polarization.

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 Hertzian
      adj : of or relating to the physicist Heinrich Hertz or his work;
            "Hertzian discoveries"