how do you define this effect mentioned above?
The the change in frequency of a wave in relation to an observer who is moving relative to the wave source. It is named after the Austrian physicist Christian Doppler, who described the phenomenon in 1842.
Doppler effect
The Doppler effect (or the Doppler shift) is the change in frequency of a wave in relation to an observer who is moving relative to the wave source. It is named after the Austrian physicist Christian Doppler, who described the phenomenon in 1842.
what happened to hungary during the cold war failure of the uprising in Hungary as evidence that the Cold War in Europe had become a stalemate. what is a precursor to hungarian revolution? Both Hungarian and German forces stationed in Hungary were subsequently defeated when the Soviet Union invaded the country in late 1944. what happened during the postwar situation? The Soviet Army occupied Hungary, with the country coming under the Soviet Union's sphere of influence. what is the space initiative of this latter mentioned country of influence? They constructed the first satellite - Sputnik 1, The first cosmonaut Yuri Gagarin was sent to the space when did this first satellite construction start? Somewhere in 1956 or 1957 who/what was responsible for its fabrication? Mikhail S. Khomyakov, Antenna Laboratory of OKB-1 what was its mission? It was launched it into an elliptical low Earth orbit on 4 October 1957. It orbited for three weeks before its batteries died and then orbited silently for two months before it fell back into the atmosphere. what was its unit at the backup was like? At least two vintage duplicates of Sputnik 1 exist, built apparently as backup units. how did it navigate? The Doppler effect could pinpoint where the satellite was along its orbit.
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Doppler effect [SEP] Introduction
The Doppler effect (or the Doppler shift) is the change in frequency of a wave in relation to an observer who is moving relative to the wave source. It is named after the Austrian physicist Christian Doppler, who described the phenomenon in 1842. A common example of Doppler shift is the change of pitch heard when a vehicle sounding a horn approaches and recedes from an observer. Compared to the emitted frequency, the received frequency is higher during the approach, identical at the instant of passing by, and lower during the recession. The reason for the Doppler effect is that when the source of the waves is moving towards the observer, each successive wave crest is emitted from a position closer to the observer than the crest of the previous wave.