Preface
In the 19th century, Maxwell combined the laws of electricity and magnetism to speculate on the evolution of and intertwining between the time-variant electric and magnetic fields to form the foundation of electromagnetism (EM). Hertz, in 1885, conducted the first experiment on the radiation of such electromagnetic waves to test Maxwell’s equations and concept of time-dependent excitation of electromagnetic waves, the Hertz dipole antenna. Thus, he conclusively proved the existence of electromagnetic waves by engineering instruments to transmit and receive radio pulses using experimental procedures that ruled out all other known wireless phenomena. Thus began the science of generation and radiation of electromagnetic waves for communication, ...
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