Faraj, A. A.
Mechanics / Electrodynamics
November 7, 2021
Doppler effect; blue shift; red shift; event; interval of time; duration; classical wave theory; elastic-impact emission theory; light source; light receiver; apparent time compression; apparent time expansion
According to every physical theory, the Doppler effect, on the electromagnetic spectrum, must lead to shortening of measured durations of events, in all cases of approach, and inversely, to lengthening of durations of events, in all cases of recession. In this investigation, the predictions of the classical wave theory and the elastic-impact emission theory, concerning this type of effect, have been calculated and analyzed, in detail. These two theories predict the same results, in all cases of moving receivers and stationary sources; but their predictions show significant differences, in all cases of moving sources and stationary receivers. Therefore, it's, possible to distinguish, experimentally, between their predictions, in this regard. Subsequently, it has been concluded that the Doppler effect, on the durations of events, is an important first-order effect that has to be taken, always, into account, in astrometric measurements, planetary ephemerides, and space navigation.
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