Electromagnetic Waves Staelin Pdf Writer
Electromagnetic wave equationThe electromagnetic wave equation is a second-order partial differential equation that describes the propagation of electromagnetic waves through a or in a vacuum. The homogeneous form of the equation, written in terms of either the electric field E or the magnetic field B, takes the form:where c is the in the medium. In a vacuum, c = 299792458 meters per second, which is the speed of light in free space.The electromagnetic wave equation derives from Maxwell's equations.It should also be noted that in most older literature, B is called the 'magnetic flux density' or 'magnetic induction'.
Electromagnetic Waves Staelin Pdf Writer Online
Main article: Wave equationThe general solution to the electromagnetic wave equation is a linear superposition of waves of the formandfor virtually any well-behaved function g of dimensionless argument φ, whereis the angular frequency (in radians per second), andis the wave vector (in radians per meter).Although the function g can be and often is a monochromatic sine wave, it does not have to be sinusoidal, or even periodic. In practice, g cannot have infinite periodicity because any real electromagnetic wave must always have a finite extent in time and space.