A plane electromagnetic wave is defined as a propagating wave with flat surfaces of constant phase, indicating that it travels in a single direction perpendicular to these planes. The discussion clarifies that while the electric (E) and magnetic (B) fields exist in three dimensions, the term "plane wave" serves as an idealization rather than a physical reality, as real electromagnetic waves experience diffraction. This distinction is crucial for understanding wave behavior in practical applications.
PREREQUISITESStudents of physics, electrical engineers, and professionals in telecommunications who seek a deeper understanding of electromagnetic wave behavior and its theoretical foundations.