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Doppler shift is the observed effect to frequency or phase noted when the producer of a periodic wave and the observer of that periodic wave are moving with respect to each other.
The best example of this is the apparent change in frequency of a siren when an ambulance goes past you. Another example is red shift, where the color of a receding star shifts towards the red end of the visible light spectrum due to its velocity relative to the Earth.
When the propagation speed depends on the medium, such as for sound, the velocity of both the producer and observer relative to each other and to the medium must be considered. When the propagation speed does not depend on the medium, such as for light, only the velocity of producer and observer relative to each other need be considered.
Marisa Predovic
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Single phase and three phase circuit?
Yes, there is a difference between single phase and three phase circuits.
Why Y phase is high in YNyn0 when doing magnetic balance test?
because y phase is y phase ...it is not b phase or R phase so it is high
What does short circit mean?
short circuite means phase to phase,three phase short, phase to earth, three phase to earth, this is all short circuite
How to Calculate three phase watts with unbalanced phase current?
You will need to determine the power per phase, and add them up to give the total power of the three-phase load. To do this, you will need to multiply the phase-voltage by the phase current by the power factor -for each phase.
What are phase daigram?
Phase diagram are also known as thermal equilibrium diagram or a consistutional diagram 1. Different uses of phase diagram are 2. prediction of phase 3. amount of phase 4.composition of phase
How does food affect phase changes?
a phase temperature is a shifting of an element from one form to anothwer
Can Jacob Black's tribe in new moon shape shift?
they do not shape shift. they phase into werewolves. shape shifting implies that they can change into anything. they can only phase into wolves. they can also phase whenever they want, not just on full moons.
What is the use of a phase shifting transformer?
minimize congestion, stability margin improvement, line overload reduction, power flow control
In three phase supply 415volts when i measured RY BY RB one of them shows 380volts rest two are show is below 150volts What is the reason can all of you clarify me?
Its one of the phase might have been grounded thereby leading to shifting of neutral.
What is the term for identifying a phase line close to the enemy position used to coordinate the lifting or shifting of supporting fires with the final deployment of maneuver elements?
Final coordination line
What is the term for identifying a phase line close to the enemy position used for coordinating the lifting or shifting of supporting fires with the final deployment of maneuver elements?
Final coordination line
What is backward shifting?
shifting backward
What is seismic shifting?
Seismic shifting is the shifting of the earth's crustal plates, causing seismic activity.
How long is the moon phases and how long does the lunar cycle last and what causes the moon phase to change phase to phase?
The lunar cycle of phases is about 29.5 days. As the moon rotates and revolves around the earth, and the earth rotates and revolves around the sun, the shadows cast by the shifting positions of the moon and earth cause the moon to wane, wax, and "disappear". This is known as the lunar cycle.
Can you fix teeth from shifting?
No you can not fix teeth from shifting
Difference between first and second shifting theorem?
Difference between first shifting and second shifting theorem
What is 8 phase shift keying?
8 phase shift keying is a complex form of digital modulation by altering a sine wave and a cosine wave: shifting their phase. The best explanations I have found so far can be found at http://en.wikipedia.org/wiki/Phase-shift_keying and http://www.sss-mag.com/pdf/1modulation.pdf But they all explain the more simpler forms of phase shift keying: Binary Phase Shift Keying (BPSK) and Quadrature Phase Shift Keying (QPSK) and they don't say much about 8PSK unfortunately. However this might still give you an idea. Good luck, I will keep searching myself. Karen von Hünerbein
