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particle
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i learned that EM wave is varying electric field and magnetic field .But what's the meaning of the amplitude of EM wave? The displacement of the photon or the magnitude of the electric/magnetic field(no. of photons)?
particle said:but it doesn't have its own meaning?
in water wave, the amplitude is the magnitude of the variation of water molecular.
then what's varying in the EM wave?
Amplitude refers to the maximum displacement of the electric and magnetic fields in an EM wave. It is a measure of the strength or intensity of the wave.
The energy of an EM wave is directly proportional to its amplitude. This means that the higher the amplitude, the more energy the wave carries.
Yes, the amplitude of an EM wave can change as it propagates through a medium. This can happen due to factors such as absorption, reflection, and diffraction.
In the context of sound, loudness is a measure of the perceived intensity of a wave. Amplitude is directly related to loudness, as a higher amplitude will result in a louder sound.
The SI unit for amplitude is meters (m). However, in the context of EM waves, amplitude is often measured in terms of electric field strength (V/m) or magnetic field strength (A/m).