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Momentum of an arbitrary wave derived from the Doppler law
حرکت یک موج دلخواه ناشی از قانون داپلر-2020 Magnitudes of the momentum of waves of various physical natures are compared by means of an
analysis of parameters of waves reflected from moving towards reflector. Based on the Doppler
law, it is shown that an increase of the frequency of the reflected wave as well as its energy is in
inverse proportion with the velocity of the wave. A conclusion is made that the momentum
density fluxes of various waves are equal to the energy density of these waves. As a particular
case, the momentum of a fragment of the light wave propagating in an optical medium is greater
by n times than that of the same fragment propagating in free space. This is another additional
argument in favor of the fact that Minkowski’s approach to calculating the moment of light is
valid. Keywords: Doppler effect | Momentum of light | Optically induced force | Energy density | Momentum density flux | Pressure of light |
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