\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.