Chapter 33
Electromagnetic Waves
James Clerk Maxwell formulated a single theory combining all the electric and magnetic effects scientists knew during that time, calling the…
The German physicist Heinrich Hertz (1857–1894) was the first to generate and detect certain types of electromagnetic waves in the laboratory.…
Maxwell's equations for electromagnetic fields are related to source charges, either static or moving. These fields act on a test charge, whose…
The existence of combined electric and magnetic fields that propagate through space as electromagnetic (EM) waves is the most significant prediction…
Electromagnetic waves are consistent with Ampere's law. Assuming there is no conduction current Ampere's law is given as:
Consider a plane…
Electromagnetic waves can travel in the vacuum as well as in matter. For example light, which is an electromagnetic wave, can travel through air,…
The energy transport per unit area per unit time, or the Poynting vector, gives the energy flux of an electromagnetic wave at any specific time. For…
An object absorbing an electromagnetic wave would experience a force in the direction of propagation of the wave. This force occurs because…
Continuous-Wave Propagation Channel-Sounding Measurement System - Testing, Verification, and Measurements
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Channel sounders are used to measure channel characteristics for radio systems. There are several types of channel sounders used today:…
Method for Recording Broadband High Resolution Emission Spectra of Laboratory Lightning Arcs
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Lightning is one of the most common and destructive forces in nature and has long been studied using spectroscopic techniques, first with traditional…