he didn't
No. The radio was invented by Guglielmo Marconi.
Rudolf Hertz did not invent anything. He was a physicist who discovered electromagnetic waves and the photoelectric effect. Hertz's work laid the foundation for the development of radio technology.
1895, soon after James Clerk Maxwell, Sir Oliver Lodge, and Heinrich Hertz had done all the hard work.
Heinrich Hertz.
Radio.
The unit for measuring radio waves, the hertz (Hz), is named after German physicist Heinrich Hertz, who made significant contributions to the study of electromagnetism and radio waves in the late 19th century.
Heinrich Rudolf Hertz
Answer Radio waves in the kilo-hertz frequecy ranges.
in 1895
Radio
Hertz invented the electromagnetic wave to test James Clerk Maxwell's theory that light is a form of electricity. Hertz created electric waves and showed that they operated like light.
the radio signal was broadcast at 100 million hertz (megahertz).