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fizzyfiz
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no need of equations
Don't keep us in the dark: tell us where you encountered this statement. In a dark alley or in broad daylight ?fizzyfiz said:I met a statement that the energy of EM wave is proportional to the amplitude square
The wave equation is linear: any sum of sinusoidals is also a solution.the shape of EM wave is sinusoidal
Depends on the dispersion relation.Does shape of EM wave change when it travels through medium
Totally disagreefizzyfiz said:no need of equations
Any sum of sinusoidals that are themselves solutions is also a solution, and these sums are not necessarily sinusoidalBvU said:The wave equation is linear: any sum of sinusoidals is also a solution.
An electromagnetic wave is a type of energy that is created by the movement of electrically charged particles. It consists of both an electric field and a magnetic field that oscillate at right angles to each other and travel through space at the speed of light.
The energy in an electromagnetic wave is directly related to its shape. The amplitude, or height, of the wave represents the intensity of the electric and magnetic fields, which in turn determines the amount of energy carried by the wave. A higher amplitude wave will have more energy than a lower amplitude wave.
The frequency and wavelength of an electromagnetic wave are determined by the source of the wave. The frequency is the number of complete oscillations of the electric and magnetic fields per second, while the wavelength is the distance between two consecutive peaks or troughs of the wave. Both are inversely proportional, meaning that as the frequency increases, the wavelength decreases.
The electric and magnetic fields in an electromagnetic wave are perpendicular to each other and oscillate in a synchronized manner. This means that when the electric field is at its maximum, the magnetic field is at its minimum, and vice versa. This interaction is what allows the wave to propagate through space.
The energy of an electromagnetic wave is directly proportional to its frequency. This means that as the frequency increases, so does the energy carried by the wave. This relationship is described by the equation E=hf, where E is the energy, h is Planck's constant, and f is the frequency of the wave.