Heinrich Rudolf Hertz (22 February 1857 – 1 January 1894) was a German physicist. In 1888 he discovered the radio waves previously predicted by Maxwell's equations. He also proved that light is a kind of electromagnetic waves. The unit for frequency is named after him.
Hertz was born in Hamburg in 1857. He studied engineering in Frankfurt and later at the University of Munich. He completed his Phd at the University of Berlin. He taught and continued research at the University of Bonn and University of Kiel.
He died from blood poisoning in 1894.
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Hertz's first radio transmitter: a dipole resonator consisting of a pair of one meter copper wires ending in 30 cm zinc spheres. When an induction coil applied a high voltage between the two sides, sparks across the center spark gap created standing waves of radio frequency current in the wires, which radiated radio waves. The frequency of the waves was roughly 50 MHz, about that used in modern television transmitters.
Heinrich Rudolf Hertz Facts for Kids. Kiddle Encyclopedia.