http://www.webstationone.com/fecha/hertz.htmIn 1888, in a corner of his physics classroom at the Karlsruhe Polytechnic in Berlin, Hertz generated electric waves by means of the oscillatory discharge of a condenser through a loop provided with a spark gap, and then detecting them with a similar type of circuit. Hertz's condenser was a pair of metal rods, placed end to end with a small gap for a spark between them. When these rods were given charges of opposite signs, strong enough to spark, the current would oscillate back and forth across the gap and along the rods. With this oscillator, Hertz solved two problems: 1) timing Maxwell's waves (he had demonstrated, in the concrete, what Maxwell had only theorized: that the velocity of radio waves was equal to the velocity of light), and 2) how to make the electric and magnetic fields detach themselves from wires and go free as Maxwell's waves.
Hertz's students were impressed, and wondered what use might be made of this marvelous phenomenon. But Hertz thought his discoveries were no more practical than Maxwell's. "It's of no use whatsoever," he replied. "This is just an experiment that proves Maestro Maxwell was right -- we just have these mysterious electromagnetic waves that we cannot see with the naked eye. But they are there."
Hertz's Radio Wave Experiment was a series of experiments conducted by German physicist Heinrich Hertz in the late 1880s. These experiments demonstrated the existence and properties of electromagnetic waves, which were theorized by James Clerk Maxwell in the 1860s.
The purpose of Hertz's Radio Wave Experiment was to provide evidence for the existence of electromagnetic waves and to study their properties, such as their wavelength and speed. Hertz's experiments also paved the way for the development of wireless communication technology.
Hertz used a simple setup for his experiments, which involved creating a spark between two metal spheres with a small gap between them. This spark produced electromagnetic waves, which were then detected by a receiver located a short distance away. Hertz also used various instruments, such as a spark gap oscillator and a Leyden jar, to generate and measure the waves.
Hertz's experiments confirmed the existence of electromagnetic waves and their properties, such as their ability to travel through space at the speed of light. He also discovered that these waves could be reflected, refracted, and polarized, similar to other types of waves such as light and sound.
There are many books and articles available that provide a comprehensive study of Hertz's Radio Wave Experiment, including "Hertz and the Maxwellian Theory" by J.L. Heilbron and "Heinrich Hertz: A Short Life" by Michael D. Cole. Other resources include scientific journals, such as "Annalen der Physik" which published Hertz's original papers, and online sources, such as the Institute of Electrical and Electronics Engineers (IEEE) website.